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Journal articles on the topic 'F1 progeny'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Smith, Sarah M., and Zhanao Deng. "Interspecific Hybridization between Coreopsis leavenworthii and Coreopsis tinctoria Differently Affected Growth, Development, and Reproduction of Their Progeny." Journal of the American Society for Horticultural Science 140, no. 1 (2015): 27–37. http://dx.doi.org/10.21273/jashs.140.1.27.

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The genus Coreopsis L. is Florida’s state wildflower; there is a strong interest in commercial production and large-scale planting of Coreopsis seed in Florida, especially the seed of Coreopsis leavenworthi Torr. & A. Gray (COLE) and Coreopsis tinctoria Nutt. (COTI). Both species belong to the same section [Calliopsis (Reichenb.) Nutt.] within Coreopsis and were known to be cross-compatible and produce interspecific hybrids when hand-pollinated or grown in close proximity. Little was known about the effects of such hybridization on progeny growth, development, and reproduction, which are v

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Idris, I., and K. Hussian. "Effects of gamma radiation and Bacillus thuringiensis on F1 progeny of Cydia pomonella." Hellenic Plant Protection Journal 14, no. 2 (2021): 99–107. http://dx.doi.org/10.2478/hppj-2021-0010.

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Summary The codling moth [Cydia pomonella L. (Lepidoptera: Tortricidae)] is the main pest in most apple orchards in Syria. It causes billions of dollars in loss of fruit crops every year. The present work examined the effects of gamma radiation and Bacillus thuringiensis (BT) on F1 progeny of C. pomonella. The experimental design was based on two factors, namely F1 offspring produced by males irradiated at a dose of 150 Gy, and artificial diet of BT-treated larvae. The first offspring of unirradiated and irradiated C. pomonella males, F1, were from parents treated with a commercial formulation

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Quesada, Mauricio, Andrew G. Stephenson, and James A. Winsor. "Effects of pollen competition on the reproductive performance in cucurbit hybrids (Cucurbitaceae): F1 and backcross generations." Canadian Journal of Botany 74, no. 7 (1996): 1113–18. http://dx.doi.org/10.1139/b96-136.

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We examined the effect of pollen competition on the reproductive performance of Cucurbita F1 and backcross progeny while attempting to control for nongenetic maternal effects and nonrandom seed abortion as possible explanations for the data. We compared the vigor of F1 and backcross progeny produced from large and small pollen loads under field conditions. The results from both field studies indicated that the progeny produced from large pollen loads outperformed the progeny produced from small pollen loads for several measures of vigor. The F1 progeny produced from large pollen loads germinat

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Jahufer, M. Z. Z., J. L. Ford, D. R. W. Woodfield, and B. A. Barrett. "Genotypic evaluation of introduced white clover (Trifolium repens L.) germplasm in New Zealand." Crop and Pasture Science 67, no. 8 (2016): 897. http://dx.doi.org/10.1071/cp16149.

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Optimal evaluation and use of introduced germplasm for species improvement is an ongoing challenge. Research was conducted to survey a select set of introduced white clover (Trifolium repens L.) germplasm from broad geographic origins to assess their genetic potential, based on F1 crosses to elite New Zealand cultivars. The bulk progeny generated from test crosses to Grasslands cultivars Demand, Sustain and Kopu II were evaluated at Palmerston North under rotational grazing by sheep. The replicated trial consisted of the 26 germplasm accessions, three cultivars used as maternal parents, and 78

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Oyediran, Isaac O., Thomas L. Clark, Steve R. Skoda, Elvis A. Heinrichs, and John E. Foster. "Utility of Morphological and Molecular Techniques for Determination of Paternity in Two Subspecies of Diabrotica undecimpunctata (Coleoptera: Chrysomelidae)." Journal of Entomological Science 42, no. 2 (2007): 174–84. http://dx.doi.org/10.18474/0749-8004-42.2.174.

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An experiment was conducted to determine the paternity of F1 progeny using morphological and molecular methods in Diabrotica (Coleoptera: Chrysomelidae) subspecies: Diabrotica undecimpunctata howardi Barber, also known as spotted cucumber beetle, and D. undecimpunctata undecimpunctata Mannerheim, also known as western cucumber spotted beetle. Results from crosses that involved the females of D. u. howardi and the males of D. u. undecimpunctata had all F1 progeny with phenotypes as the male parent. Similarly, in all the crosses that involved the females of D. u. undecimpunctata and the males of

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Zainol, Rozlaily, and Dennis P. Stimart. "Genetic Analysis in Nicotiana alata: The Inheritance of Flower Doubleness." HortScience 30, no. 4 (1995): 812B—812. http://dx.doi.org/10.21273/hortsci.30.4.812b.

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Genetic analysis of a white double-flowering Nicotiana alata is being investigated. Self-pollination of the double-flowering plant produced all double progeny. Reciprocal hybridization of the double-flowered selection with N. alata cultivars produced nondouble F1 progeny that segregated 3:1 (nondouble to double) in the F2 generation. Reciprocal backcrosses of F1 plants to the parents resulted in nondouble progeny when backcrossed to the nondouble parent and 1:1 segregation when backcrossed to the double parent. Intercross of F1 plants resulted in progeny segregating 3:1. Double flowering habit

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7

Janmaat, Alida F., Ping Wang, Wendy Kain, Jian-Zhou Zhao, and Judith Myers. "Inheritance of Resistance to Bacillus thuringiensis subsp. kurstaki in Trichoplusia ni." Applied and Environmental Microbiology 70, no. 10 (2004): 5859–67. http://dx.doi.org/10.1128/aem.70.10.5859-5867.2004.

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ABSTRACT The genetic inheritance of resistance to a commercial formulation of Bacillus thuringiensis subsp. kurstaki was examined in a Trichoplusia ni colony initiated from a resistant population present in a commercial vegetable greenhouse in British Columbia, Canada. Progeny of F1 reciprocal crosses and backcrosses between F1 larvae and resistant (PR) and susceptible (PS) populations were assayed at different B. thuringiensis subsp. kurstaki concentrations. The responses of progeny of reciprocal F1 crosses were identical, indicating that the resistant trait was autosomal. The 50% lethal conc

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Prasetyo, Joko Handoko Hadi, and Jajan Djuhjana. "Tanzania Virescent and Early Evaluation of Their Descendant." IOP Conference Series: Earth and Environmental Science 1308, no. 1 (2024): 012006. http://dx.doi.org/10.1088/1755-1315/1308/1/012006.

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Abstract The Tanzania oil palm population was introduced to Sumatra Bioscience (SumBio)-PT PP London Sumatra Indonesia Tbk, when two palms of open-pollinated seeds were planted at Bah Lias Estate in 1996. One of two palms was confirmed as virescent dura after producing bunches. The virescent dura was selfed, and F1 progeny were planted in 2001. Bunch character data shows that the F1 progeny of Tanzania virescent dura had a large kernel size with a kernel-to-bunch ratio (KB) of about 8%. On the other hand, the segregation of F1 progeny shows 87% of descendants are virescent. Three virescent dur

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Żebrowska, Jadwiga, and Magdalena Dyduch. "Quantitative assessment of the morphogenetic efficiency in strawberry Fragaria × ananassa Duch." Folia Horticulturae 21, no. 2 (2009): 53–64. http://dx.doi.org/10.2478/fhort-2013-0138.

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Abstract A quantitative assessment of the morphogenetic capability of strawberry was performed. In the experiment, three genotypes of strawberry Fragaria × ananassa Duch. were tested, including two cultivars: ‘Plena’ and ‘Kent’, and one breeding clone no. „394‟. Morphogenetic efficiency was expressed by the mean number of microplants produced by the explant of progeny combinations F1 in two subsequent subcultures. Progeny F1 was obtained after crossings, which were carried out according to Griffing's method 3, with the use of the parental genotypes given above. Quantitative parameters: combini

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Zhu, Yu Cheng, Fengyi Liu, Zhiping Xu, Juhua Chang, Craig A. Abel, and Jinliang Shen. "A Modified F1 Screening Method for Detecting Resistance Gene Alleles to Bt Cotton in Helicoverpa armigera (Lepidoptera: Noctuidae)." Journal of Entomological Science 43, no. 3 (2008): 311–19. http://dx.doi.org/10.18474/0749-8004-43.3.311.

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Large-scale cultivation of Bt cotton places high selection pressure on target insects and, consequently, may prompt resistance evolution in pest populations. To better monitor Bt-resistance allele frequency in field populations, a modification of the F1 screen was developed to screen F1 progeny derived from single pair mating between field-collected males and laboratory resistant females (designated as F1 screen). This method was used to survey a field population of Heliocoverpa armigera (Hübner) for resistance alleles at the same loci in the resistant strain. After treatment of the F1 progeny

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Wibowo, Ari, and Ucu Sumirat. "Frequency distribution and potence ratio of agronomic traits in F1 generation of intraspecific crosses of Robusta coffee." Pelita Perkebunan (a Coffee and Cocoa Research Journal) 38, no. 2 (2022): 83–97. http://dx.doi.org/10.22302/iccri.jur.pelitaperkebunan.v38i2.495.

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Leaf morphological traits and internode length significantly affect the adapt-ability and production of coffee plants, respectively. Therefore, genetic studies of these two characters can support the effectiveness of Robusta coffee breeding program for obtaining superior planting materials. This study aimed to determine the diversity and frequency distribution of F1 generation on internode length and leaf size of Robusta coffee crosses. The study involved six groups of F1 progeny and their reciprocals (F1R) resulted from a cross of three parents, namely BP 961, Q 121, and BP 409. Each cross co

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NAGAI, J., G. DAVIS, and C. Y. LIN. "GROWTH OF MICE PRODUCED BY MALES WITH OR WITHOUT THE RAT GROWTH HORMONE TRANSGENE." Canadian Journal of Animal Science 70, no. 3 (1990): 979–82. http://dx.doi.org/10.4141/cjas90-119.

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Male mice with or without the rat growth hormone transgene were mated with females of three lines without the transgene to examine body weight of resulting crossbred progeny at 21 and 42 d of age. The F1 progeny of sires with the transgene were consistently 16% heavier (P < 0.01) in 42-d body weight than F1 progeny of sires without the transgene in the three dam lines. The former progeny were also significantly (P < 0.01) heavier than the latter at weaning at 21 d of age. Progeny from backcrossing to sires with the transgene were, on average, 17% heavier (P < 0.01) at 42-d than those

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13

Adhikari, Tika B., Jean Q. Liu, Snehlata Mathur, Chunren X. Wu, and S. Roger Rimmer. "Genetic and Molecular Analyses in Crosses of Race 2 and Race 7 of Albugo candida." Phytopathology® 93, no. 8 (2003): 959–65. http://dx.doi.org/10.1094/phyto.2003.93.8.959.

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The inheritance of avirulence and polymorphic molecular markers in Albugo candida, the cause of white rust of crucifers, was studied in crosses of race 2 (Ac2), using isolates MiAc2-B1 or MiAc2-B5 (metalaxyl-insensitive and virulent to Brassica juncea cv. Burgonde) with race 7 (Ac7), using isolate MsAc7-A1 (metalaxyl-sensitive and virulent to B. rapa cv. Torch). Hybrids were obtained via co-inoculation onto a common susceptible host. Putative F1 progeny were selfed to produce F2 progeny. The parents and F1 progeny were examined for virulence on the differential cultivars B. juncea cv. Burgonde

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Werner, Dennis J., Michael A. Creller, and José X. Chaparro. "Inheritance of the Blood-flesh Trait in Peach." HortScience 33, no. 7 (1998): 1243–46. http://dx.doi.org/10.21273/hortsci.33.7.1243.

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Inheritance of the blood-flesh (red-violet mesocarp) trait in peach [Prunus persica (L.) Batsch.] was investigated in S1, S2, F1, F2, F3, BC1P1, and BC1P2 families derived from `Harrow Blood', a clone showing anthocyanin accumulation in fruit about 45-50 days after anthesis. This trait invariably was associated with the red midrib leaf phenotype in `Harrow Blood', an S1 family from `Harrow Blood', and in green leaf F2 progeny derived from `Harrow Blood' × `Rutgers Red Leaf 2n'. A segregation ratio of about 3 blood-flesh : 1 wild-type was observed in the S1 family, but F1 progeny produced only

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15

Chung, Kuang-Ren, Walter Hollin, Malcolm R. Siegel, and Christopher L. Schardl. "Genetics of Host Specificity in Epichloë typhina." Phytopathology® 87, no. 6 (1997): 599–605. http://dx.doi.org/10.1094/phyto.1997.87.6.599.

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Epichloë typhina perennially and systemically infects grass plants, causing choke disease in which maturation of host inflorescences is suppressed. In seedling-inoculation tests, isolate E8 from perennial ryegrass established and maintained infection in this host but not in orchardgrass. In contrast, isolates E469, E2466, and E2467 from orchardgrass varied in infection frequency and stability in orchardgrass, but all were unable to establish stable infections in perennial ryegrass. To investigate the genetics of host specificity, isolate E8 was crossed with each of the isolates from orchardgra

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Arthur, Frank. "Residual Efficacy of a Deltamethrin Emulsifiable Concentrate Formulation against Rhyzopertha dominica (F.) and Sitotroga cerealella (Oliver) after Partial Treatment of Brown Rice." Insects 10, no. 4 (2019): 95. http://dx.doi.org/10.3390/insects10040095.

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Rhyzopertha dominica (Fab.), the lesser grain borer, and Sitotroga cerealella (Olivier), the Angoumois grain moth, are internally feeding stored product insects that can infest raw grains. In this test, brown rice was treated with 0.5 and 1.0 ppm of a new emulsifiable concentrate (EC) formulation of the pyrethroid deltamethrin and stored for 12 months. One day after treatment, and every 3 months for 12 months, treated rice was mixed with untreated brown rice in the following ratios: 0:100 (untreated controls), 10:90, 25:75, 50:50, 75:25, and 100:0 (all treated). Bioassays were conducted by exp

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Bosland, Paul W. "Second Generation (F2) Hybrid Cultivars for Jalapeño Production." HortScience 40, no. 6 (2005): 1679–81. http://dx.doi.org/10.21273/hortsci.40.6.1679.

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Chile pepper (Capsicum spp.) hybrids are normally produced by hand-emasculating the female parent and then pollinating the emasculated flower by hand. Increased yield has occurred with F1 hybrid seed, but the seed is considered too expensive by growers to be direct-seeded, a common production practice in the southwestern U.S. chile pepper industry. In ornamental flowers, when F2 hybrid seed is available, it is cheaper than F1 hybrid seed. If F2 hybrid chile pepper cultivars could manifest heterosis, and produce fruit quality acceptable to the chile pepper industry, then a less-costly alternati

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Vijay, S., and K. Bhuvaneswari. "Comparative development of sorghum, redgram and rice breeding population of Sitophilus oryzae (L.) feeding on cereals and split redgram dhal." Journal of Applied and Natural Science 9, no. 4 (2017): 2507–10. http://dx.doi.org/10.31018/jans.v9i4.1562.

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Rice weevil Sitophilus oryzae (L.) mainly attacks whole grains such as wheat, corn, barley and rice and have been found actively breeding in such foods. The host range of S. oryzae now extended to split pulses. An experiment was carried out at the Entomology Laboratory, TNAU, Coimbatore during 2014-2015 to study the comparative development of sorghum, redgram and rice breeding population of S. oryzae feeding on cereals and split redgram dhal. The assessed parameters were survival percentage, per cent mortality and F1 progeny. The per cent mortality was higher in sorghum breeding population whi

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Chung, Sang-Min, Jack E. Staub, and Gennaro Fazio. "Inheritance of Chilling Injury: A Maternally Inherited Trait in Cucumber." Journal of the American Society for Horticultural Science 128, no. 4 (2003): 526–30. http://dx.doi.org/10.21273/jashs.128.4.0526.

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Chilling temperatures (≤12°C) can cause substantial economic damage to cucumber (Cucumis sativus L.) plants. Previous studies suggest chilling tolerance trait is controlled by nuclear gene(s). To investigate inheritance of chilling injury in cucumber, cucumber lines [susceptible GY14 (P1), tolerant `Chipper' (P2), and tolerant `Little John' (P3)], and their exact reciprocal F1 and F2 cross-progeny were evaluated to determine the inheritance of chilling injury at the first true-leaf stage when challenged at 4 °C for 5.5 hours. The mean chilling ratings [1(trace) to 9(dead)] of progeny compariso

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Chung, Sang-Min, Jack E. Staub, and Gennaro Fazio. "Inheritance of Chilling Injury: A Maternally Inherited Trait in Cucumber." Journal of the American Society for Horticultural Science 128, no. 4 (2003): 526–30. https://doi.org/10.21273/jashs.128.4.526.

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Chilling temperatures (≤12°C) can cause substantial economic damage to cucumber (Cucumis sativus L.) plants. Previous studies suggest chilling tolerance trait is controlled by nuclear gene(s). To investigate inheritance of chilling injury in cucumber, cucumber lines [susceptible GY14 (P1), tolerant `Chipper' (P2), and tolerant `Little John' (P3)], and their exact reciprocal F1 and F2 cross-progeny were evaluated to determine the inheritance of chilling injury at the first true-leaf stage when challenged at 4 °C for 5.5 hours. The mean chilling ratings [1(trace) to 9(dead)] of progeny compariso

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Hanson, Peter M., Olivia Licardo, Hanudin, Jaw-Fen Wang, and Jen-tzu Chen. "Diallel Analysis of Bacterial Wilt Resistance in Tomato Derived from Different Sources." Plant Disease 82, no. 1 (1998): 74–78. http://dx.doi.org/10.1094/pdis.1998.82.1.74.

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Bacterial wilt, caused by Ralstonia solanacearum, is a major constraint to tomato production in the tropics and subtropics. Most bacterial wilt-resistant tomato cultivars have not shown consistently high resistance levels over locations. The objective of this study was to determine whether combining resistance derived from different sources would result in F1 progenies with resistance greater than that of the parents. Five bacterial wilt-resistant tomato lines or accessions (CL5915, L285, CRA84, H7997, and GA219), each derived from different resistance sources, and a susceptible processing tom

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22

Nazaire Aïzoun. "Comparison of susceptibility to deltamethrin in female adult Anopheles gambiae s.l. from Dogbo district with their F1 progeny susceptibility in South-Western Benin, West Africa." GSC Biological and Pharmaceutical Sciences 18, no. 2 (2022): 136–43. http://dx.doi.org/10.30574/gscbps.2022.18.2.0332.

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The current study was aimed to compare the susceptibility to deltamethrin in female adult Anopheles gambiae s.l. from Dogbo district with their F1 progeny susceptibility in South-Western Benin, West Africa. Larvae and pupae of Anopheles gambiae s.l. populations were collected from the breeding sites in Couffo department in 2020 and reared up for obtaining F1 progeny. Female adult An. gambiae s.l. mosquitoes were also collected from window traps put on windows of rooms in Dogbo district surveyed. An. gambiae s.l. mosquitoes were collected from March to July and August to November 2020 during th

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23

Nassar, Hala Nagib, Nagib M. A. Nassar, Clibas Vieira, and Luiz S. Saraiva. "Cytogenetic behaviour of the interspecific hybrid of Manihot neusana Nassar and cassava, M. esculenta Crantz, and its backcross progeny." Canadian Journal of Plant Science 75, no. 3 (1995): 675–78. http://dx.doi.org/10.4141/cjps95-113.

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An interspecific hybrid between cassava, Manihot esculenta Crantz, and M. neusana Nassar and the backcrossed progenies was examined meiotically and mitotically. The F1 hybrid showed irregular meiosis due to unpaired chromosomes. The backcrossed progeny ranged in fertility from 17.7 to 35.8%. Meiotic restitution was also observed in all of the hybrids. Diploid pollen formation also occurred and ranged from 0.6 to 1.6%. Irregular meiosis among the F1 hybrid produced aneuploidy in backcrossed progeny. When the F1 hybrid was used as the maternal plant in backcrosses with cassava, this improved see

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Chinthakuntla, Reddy R., Frank Matta, Rao S. Mentreddy, et al. "(274) Inter- and Intra-specific Variation in Yield and Quality Traits of Chile Pepper Breeding Lines." HortScience 40, no. 4 (2005): 1021A—1021. http://dx.doi.org/10.21273/hortsci.40.4.1021a.

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Chilepepper (Capsicum spp.) is the third most important vegetable crop in the United States. The market value of chile peppers for spices and condiments exceeds $650 million per year. With a growing Hispanic population across the United States, the demand for high yielding, good quality cayenne pepper continues to increase. In order to fulfill this niche market, a study has been initiated to develop pepper varieties that combine high yield potential with superior agronomic traits, including insect and disease resistance, and fruit characteristics, using molecular marker assisted breeding/selec

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25

Reddy, M. K., and N. C. Subrahmanyam. "Inheritance and transmission of plastid alterations in a green–white stripe mutant of pearl millet (Pennisetum americanum)." Canadian Journal of Botany 66, no. 1 (1988): 179–82. http://dx.doi.org/10.1139/b88-028.

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The breeding behaviour of the GWS-14 stripe mutant of pearl millet was tested in crosses with different normal inbred lines. The F2 segregations revealed two independently assorting recessive nuclear genes controlling the stripe phenotype with variable expressivity. Striping appeared 25 days after germination or later, suggesting the delayed expression of mutant genes. When stripe plants were crossed with pollen from normal inbreds, normal and white F1 progeny were obtained, while reciprocal crosses gave exclusively normal F1 progeny, suggesting that the white plastids are maternally transmitt

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Nakamura, T., T. Konishi, H. Kawaguchi, and Y. Hayashi. "Glucose phosphate isomerase isozymes as genetic markers for lines of Eimeria tenella." Parasitology 96, no. 2 (1988): 281–88. http://dx.doi.org/10.1017/s0031182000058285.

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SummaryTwo strains of Eimeria tenella with different decoquinate sensitivity and different glucose phosphate isomerase (GPI) isozymes were used in genetic recombination experiments: a line derived from a laboratory strain (NIAH) was decoquinate-resistant (DR) and had the isozyme GPI-9, while a field isolate (Iwate strain) was decoquinate-sensitive (DS) and had GPI-1. Coccidia-free chickens were orally inoculated with mixed oocysts of the two strains and parasites of the F1 generation were recovered. The F1 progeny showed both forms of the isozyme. Next, oocysts of the F1 progeny were passaged

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Bailey, C. M., Y. O. Koh, W. D. Foote, and D. R. Hanks. "Life-cycle evaluation of Bos taurus and Bos indicus × Bos taurus breed types in a dry, temperate climate: performance of mature dams." Journal of Animal Science 68, no. 4 (1990): 960–68. http://dx.doi.org/10.2527/1990.684960x.

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Abstract Mature dams representing Hereford, Red Poll, F1 Hereford × Red Poll, F<Analysis of the Hereford1 Red Poll × Hereford, F1 Angus × Hereford, F1 Angus × Charolais, F1 Brahman × Hereford and F1 Brahman × Angus breed types were evaluated. All cows were bred to Limousin sires to produce two-way or three-way-cross progeny. Mature Brahman × Hereford dams produced a higher (P < .05) percentage of live calves than Herefords, but dam breed differences in percentage of calves weaned relative to the number of cows exposed for mating were not statistically significant. Progeny of Angus × Char

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Villavaso, Eric J. "Effects of Irradiation on Reproduction in Tarnished Plant Bug (Heteroptera: Miridae) and F1 Progeny." Journal of Entomological Science 40, no. 1 (2005): 39–46. http://dx.doi.org/10.18474/0749-8004-40.1.39.

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Tarnished plant bugs, Lygus lineolaris (Palisot de Beauvois), were administered dosages of 0, 5, 10, 15, 20 and 40 krad of gamma-radiation from a 137Cs source (10 krad = 100 Gy). Reductions in egg hatch and egg-to-adult survival in both irradiated parents and their F1 progeny tended to be inversely proportional to dosage received. Hatch of eggs from untreated parents averaged 58.9% and fell to 4.6% when males were treated with 40 krad. Egg-to-adult survival was more severely curtailed than egg hatch, averaging 36.0% for untreated groups and 0% for 40 krad groups. F1 progeny exhibited greater r

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Ceylan, F. Oncu, Alper Adak, Duygu Sari, Hatice Sari, and Cengiz Toker. "Unveiling of suppressed genes in interspecific and backcross populations derived from mutants of Cicer species." Crop and Pasture Science 70, no. 3 (2019): 254. http://dx.doi.org/10.1071/cp18504.

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Although many interspecific crosses in Cicer species have successfully been carried out to improve the population in cultivated chickpea (Cicer arietinum L.), interspecific and backcross populations derived from mutants of Cicer species have not been studied for revealing suppressed genes responsible for heterotic effects and transgressive segregations. Therefore, the study aimed (i) to estimate heterosis (here, offspring superior to mid-parent value) and heterobeltiosis (offspring superior to better parent) for yield and yield components in the F1; (ii) to decipher transgressive segregation (

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Mikami, Hitoshi, and Akira Onishi. "‘Heterosis’ in litter size of chimaeric mice." Genetical Research 46, no. 1 (1985): 85–94. http://dx.doi.org/10.1017/s0016672300022473.

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SUMMARYAggregation chimaeras were made from embryos of C57BL/6 and BALB/c mice. Chimaeric and control females were mated with ICR males at 8 weeks of age and their litter sizes were evaluated over a 5-month period after the first mating. Progeny tests showed that 18 of 27 chimaeras produced oocytes of both genotypes. The mean litter sizes of C57BL/6, BALB/c and their F1 crosses (C57BL/6 × BALB/c and BALB/c × C57BL/6) were 8·14, 9·36, 13·38 and 13·40, respectively. The mean for chimaeras was 11·54 and chimaeric heterosis was evident, but it was not as much as heterosis in the F1 When the chimae

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Mosseler, A. "Hybrid performance and species crossability relationships in willows (Salix)." Canadian Journal of Botany 68, no. 11 (1990): 2329–38. http://dx.doi.org/10.1139/b90-297.

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Interspecific hybridization between Salix amygdaloides Anderss., S. bebbiana Sarg., S. discolor Muhl., S. eriocephala Michx., S. exigua Nutt., S. lucida Muhl., S. pellita Anderss., and S. petiolaris Smith revealed several forms of postzygotic inviability including seed incompatibility, seedling inviability, inferior growth performance, and reduced fertility in the F1 hybrid progeny. The proportion of inviable and inferior progeny varied with the species combination and the specific combining ability of genotypes within each species combination. Family mean growth performance was lower in most

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Schelfhout, C. J., J. M. Wroth, G. Yan, and W. A. Cowling. "Enhancement of genetic diversity in canola-quality Brassica napus and B. juncea by interspecific hybridisation." Australian Journal of Agricultural Research 59, no. 10 (2008): 918. http://dx.doi.org/10.1071/ar07425.

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Reciprocal crosses were made between Brassica napus cv. Mystic (canola) and B. juncea JN29 (near canola quality). The F1 hybrids were selfed and backcrossed in all possible combinations to parent plants. The greatest number of selfed fertile progeny were obtained when Mystic was the maternal parent, and its F1 was most successful in backcrosses to Mystic or JN29 as maternal or paternal parent. The predominant morphological type of fertile progeny was B. napus, but several B. juncea morphological types occurred in F2 and BC1-derived lines. F2 : 3 and BC1S0 : 1 progeny showed transgressive segre

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Lyrene, Paul. "SPARKLEBERRY × BLUEBERRY CROSSES." HortScience 25, no. 9 (1990): 1168c—1168. http://dx.doi.org/10.21273/hortsci.25.9.1168c.

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Diploid blueberry (Vaccinium section Cyanococcus) was pollinated in a greenhouse in 1981 with pollen from sparkleberry (V. arboreum, Section Batodendron). Cyanococcus parents included V. darrowi, diploid V. corymbosum, and various intra-sectional diploid hybrids. Forty one vigorous seedlings showing characteristics of both sections were selected from a field nursery when 2 ½ years old. Some of these plants flowered heavily in subsequent years, and several were more than 3 m tall by 1990. Although the F1 hybrids had very low fertility, some open-pollinated progeny were obtained. Some of these w

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Nazaire, Aïzoun. "Comparison of susceptibility to deltamethrin in female adult Anopheles gambiae s.l. from Dogbo district with their F1 progeny susceptibility in South-Western Benin, West Africa." GSC Biological and Pharmaceutical Sciences 18, no. 2 (2022): 136–43. https://doi.org/10.5281/zenodo.6330273.

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The current study was aimed to compare the susceptibility to deltamethrin in female adult <em>Anopheles gambiae s.l.</em> from Dogbo district with their F1 progeny susceptibility in South-Western Benin, West Africa. Larvae and pupae of <em>Anopheles gambiae s.l.</em> populations were collected from the breeding sites in Couffo department in 2020 and reared up for obtaining F1 progeny. Female adult <em>An. gambiae s.l.</em> mosquitoes were also collected from window traps put on windows of rooms in Dogbo district surveyed. <em>An. gambiae s.l.</em> mosqui

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Soliman, Wagdi S., Ahmed M. Abbas, Stephen J. Novak, Masahiro Fujimori, Kazuhiro Tase, and Shu-ichi Sugiyama. "Inheritance of heat tolerance in perennial ryegrass (Lolium perenne, Poaceae): evidence from progeny array analysis." PeerJ 9 (July 20, 2021): e11782. http://dx.doi.org/10.7717/peerj.11782.

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Background Heat stress is considered one of the most important environmental factors influencing plant physiology, growth, development, and reproductive output. The occurrence and damage caused by heat stress will likely increase with global climate change. Thus, there is an urgent need to better understand the genetic basis of heat tolerance, especially in cool season plants. Materials and Methods In this study, we assessed the inheritance of heat tolerance in perennial ryegrass (Lolium perenne L. subspecies perenne) , a cool season grass, through a comparison of two parental cultivars with t

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Zhou, Yiwei, Xinru Zou, Fulong Yan, et al. "Phenotypic Variation in Flower Color and Morphology in the Gerbera (Gerbera hybrida) F1 Hybrid Population and Their Association with EST-SSR Markers." International Journal of Molecular Sciences 25, no. 1 (2023): 203. http://dx.doi.org/10.3390/ijms25010203.

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Gerbera (Gerbera hybrida) is a widely cultivated ornamental plant. However, its genetic improvement is limited by the lack of genetic analysis and molecular markers for traits. In this study, we analyzed the phenotypic and genotypic variation of 140 F1 progeny from two gerbera varieties with different flower types and colors. We evaluated the flower’s morphology, color, and pigment content of the F1 population and performed cluster principal component analysis (PCA) and correlation analysis. The results showed that the main ornamental traits of the hybrid progeny varied greatly. The segregatio

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Gaus, Jessica, Dennis Werner, and Shyamalrau Tallury. "Polyploidy in Stokes Aster (Stokesia laevis)." HortScience 40, no. 4 (2005): 1101A—1101. http://dx.doi.org/10.21273/hortsci.40.4.1101a.

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Segregation analysis of two different F2 families of stokes aster created by hybridizing two blue-flowered cultivars [`Peaches Pick' (PE) and `Omega Skyrocket' (OSR)] with the yellow-flowered cultivar `Mary Gregory' (MG) gave disparate results. The F2 progeny of PE × MG segregated in the expected 3:1 (blue:yellow) ratio. In contrast, all 782 progeny from the MG × OSR F2 family were blue-flowered. Flow cytometric analysis of the parents and F1 hybrids was conducted to determine if ploidy differences existed among the parents, as such differences could account for aberrant segregation behavior i

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Wasilwa, L. A., T. E. Morelock, and J. C. Correll. "Examination of the Inheritance of Resistance of Colletotrichum orbiculare Race 2 in Cucumber." HortScience 31, no. 4 (1996): 623a—623. http://dx.doi.org/10.21273/hortsci.31.4.623a.

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Anthracnose of cucurbits, caused by Colletotrichum orbiculare, is composed of three races (race 1, 2, and 2B). The inheritance of race 1 in cucumber is reported to be controlled by a single recessive gene. Although the mode of inheritance to race 2 in cucumber has not been determined, it has been suggested that is quantitatively inherited. Four cucumber cultivars, H19 from two sources [the commercial seed (P1) and the breeders seed (P2)], Pixie (P3), and Marketer (P4), that were considered highly resistant, moderately resistant and highly susceptible, respectively, to race 2 were used as the p

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Werner, Dennis J., and Michael A. Creller. "Inheritance and Linkage Studies in Peach." HortScience 30, no. 4 (1995): 809B—809. http://dx.doi.org/10.21273/hortsci.30.4.809b.

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Inheritance of male sterility in peach [Prunus persica (L.) Batsch] Plant Introduction (PI) 240928 was investigated. Crosses of PI 240928 with five wild-type clones yielded all male-sterile offspring, indicating dominant gene action. Inheritance of the sweet kernel trait in peach was studied in F1 and F2 progeny of `Summer Beaut' nectarine (sweet kernel) × `Biscoe' peach (bitter kernel). All four F1 progeny were bitter. Segregation in an F2 of 80 progeny fit a ratio of 3 bitter: 1 sweet. We propose that the gene controlling the sweet kernel trait be designated sk. Sweet kernel (sk) was linked

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Beez, Dorothee, Cecilia P. Sanchez, Wilfred D. Stein, and Michael Lanzer. "Genetic Predisposition Favors the Acquisition of Stable Artemisinin Resistance in Malaria Parasites." Antimicrobial Agents and Chemotherapy 55, no. 1 (2010): 50–55. http://dx.doi.org/10.1128/aac.00916-10.

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ABSTRACTThe emergence of artemisinin-resistantPlasmodium falciparummalaria jeopardizes efforts to control this infectious disease. To identify factors contributing to reduced artemisinin susceptibility, we have employed a classical genetic approach by analyzing artemisinin responses in the F1 progeny of a genetic cross. Our data show that reduced artemisinin susceptibility is a multifactorial trait, withpfmdr1and two additional loci (on chromosomes 12 and 13) contributing to it. We further show that the different artemisinin susceptibilities of the progeny strains affect their responses to sel

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Zhang, Xiaojie, Mengyue Tang, Jiamei Li, et al. "Phenotypic Characters and Inheritance Tendency of Agronomic Traits in F1 Progeny of Pear." Plants 14, no. 10 (2025): 1491. https://doi.org/10.3390/plants14101491.

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Studying fruit genetic trends, heterosis, and growth traits in pear hybrid progeny provides the foundation for variety breeding. The aim of this research is to reveal the trait performance of the hybrid progeny of Chinese white pear and Western pear and provide a theoretical basis for other breeders to predict the trait performance of their hybrid progeny when selecting Eastern pear and Western pear as parents. Our research team constructed a ‘Yuluxiang’ × ‘Xianghongli’ interspecific hybrid population in 2015, and in 2023, we conducted a two-year investigation of 16 traits in 140 hybrid progen

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Jugulam, Mithila, Michael D. McLean, and J. Christopher Hall. "Inheritance of picloram and 2,4-D resistance in wild mustard (Brassica kaber)." Weed Science 53, no. 4 (2005): 417–23. http://dx.doi.org/10.1614/ws-04-149r.

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The primary goal of this research was to determine the inheritance of cross-resistance to several groups of auxinic herbicides through classical genetic approaches using auxinic herbicide–resistant (R) and –susceptible (S) wild mustard biotypes obtained from western Canada. F1 progeny were raised from crosses between homozygous auxinic herbicide–R and –S wild mustard parental lines. The F1 and F2 populations were assessed for picloram (pyridine group) and 2,4-D (phenoxyalkanoic group) resistance or susceptibility. Analyses of the F1 as well as the F2 progeny indicate that a single dominant gen

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Gibbs, P. E. "Male genital defect (Dumpton Syndrome) in the dog-whelk Nucella lapillus (Neogastropoda): Mendelian inheritance inferred, based on laboratory breeding experiments." Journal of the Marine Biological Association of the United Kingdom 85, no. 1 (2005): 143–50. http://dx.doi.org/10.1017/s0025315405010969h.

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Laboratory breeding of the dog-whelk, Nucella lapillus, has established that the male-sterilizing Dumpton Syndrome (DS)—underdevelopment, or non-development (aphally), of the penis, incomplete formation (non-closure) of the vas deferens, resulting in a split prostate—can be readily observed in male F1 progeny. Cultivated under high ambient concentrations of the antifouling agent tributyltin (TBT), DS-carrying females can be recognized by their lesser degree of masculinization (imposex): sterilization is thereby avoided. When Dumpton females are crossed, under high ambient TBT, with individuals

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Jasieniuk, Marie, Ian N. Morrison, and Anita L. Brûlé-Babel. "Inheritance of Dicamba Resistance in Wild Mustard (Brassica kaber)." Weed Science 43, no. 2 (1995): 192–95. http://dx.doi.org/10.1017/s0043174500081054.

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The inheritance of resistance to dicamba in wild mustard was determined by making reciprocal crosses between a resistant (R) population derived from a field treated repeatedly with auxin-type herbicides, and a known susceptible (S) population. The resulting F1 hybrids were selfed to produce F2 populations and backcrossed to the S parent. At the three- to four-leaf stage, parental, F1, F2, and backcross populations were screened for resistance to dicamba at three dosages (50, 200, and 400 g ai ha−1). F1 progeny survived all dosages and exhibited levels of injury similar to the R parental popula

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Gong, Pengfei, Danielle Bailbé, Lola Bianchi, et al. "Paternal High-Protein Diet Programs Offspring Insulin Sensitivity in a Sex-Specific Manner." Biomolecules 11, no. 5 (2021): 751. http://dx.doi.org/10.3390/biom11050751.

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The impact of maternal nutrition on offspring is well documented. However, the implication of pre-conceptional paternal nutrition on the metabolic health of the progeny remains underexplored. Here, we investigated the impact of paternal high-protein diet (HPD, 43.2% protein) consumption on the endocrine pancreas and the metabolic phenotype of offspring. Male Wistar rats were given HPD or standard diet (SD, 18.9% protein) for two months. The progenies (F1) were studied at fetal stage and in adulthood. Body weight, glycemia, glucose tolerance (GT), glucose-induced insulin secretion in vivo (GIIS

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Kropp, Bradley R. "Variation in acid phosphatase activity among progeny from controlled crosses in the ectomycorrhizal fungus Laccaria bicolor." Canadian Journal of Botany 68, no. 4 (1990): 864–66. http://dx.doi.org/10.1139/b90-114.

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The variation in acid phosphatase activity among the monokaryotic F1 progeny from two different synthesized dikaryotic cultures of the ectomycorrhizal basidiomycete Laccaria bicolor was examined. The progeny of one of the dikaryons showed variation in acid phosphatase activity up to 10 times that of the lowest value. The progeny of the other dikaryon were much less variable, showing differences of up to 5 times the lowest value. Both sets of monokaryotic progeny showed distributions indicative of polygenic inheritance for acid phosphatase activity in this fungus. Key words: ectomycorrhizae, ge

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Yusoff, Nur Afizah, Izatus Shima Taib, Siti Balkis Budin, and Mahaneem Mohamed. "Paternal Fenitrothion Exposures in Rats Causes Sperm DNA Fragmentation in F0 and Histomorphometric Changes in Selected Organs of F1 Generation." Toxics 9, no. 7 (2021): 159. http://dx.doi.org/10.3390/toxics9070159.

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The adverse effects of maternal pesticides exposure on the progeny is very well established. However, the impact of paternal exposure to pesticides such as Fenitrothion (FNT) on the histomorphometry of progeny’s organs in unexposed mothers are much less well studied. Therefore, this study aims to evaluate the effects of paternal FNT exposure on the sperm quality of the parent rat and its effects on the histomorphometry of the progeny’s organs. Randomly, male Sprague Dawley rats (n = 24) categorized as F0 were distributed equally into three groups namely Control, FNT-10, and FNT-20. Control rec

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SHRESTHA, KESHAB, YOSHIHIKO SAKO, and YUZABURO ISHIDA. "Intraspecific Crossing, Zygote Germination and F1 Progeny of Gonium pectorale." Bulletin of Japanese Society of Microbial Ecology 8, no. 1 (1993): 35–42. http://dx.doi.org/10.1264/microbes1986.8.35.

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Trujillo-Ortiz, Antonio, Ronald S. Burton, Jorge de la Rosa-Velez, and Francisco Correa-Sandoval. "Interbreeding between two populations of Acartia californiensis (Copepoda: Calanoida): a laboratory study." Journal of the Marine Biological Association of the United Kingdom 79, no. 5 (1999): 945–48. http://dx.doi.org/10.1017/s0025315498001131.

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Interbreeding between two populations (Estero de Punta Banda, Baja California, Mexico (PB) and Mission Bay, California, USA (MB)) was tested using the live progeny (nauplii) of the marine calanoid copepod Acartia californiensis, in a male to female ratio of 3:1. The laboratory conditions were 18±2°C and a 12:12 h L:D cycle, during an experimental period of one week. The first filial progeny (F1) present in the replicates were used in four combinational experiments (non-hybrids: PB-PB and MB-MB, and hybrids: PB-MB and MB-PB). To investigate the production of the F2 generation, males and females

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Vogel, Stefanie N., Dabney Johnson, Pin-Yu Perera, et al. "Cutting Edge: Functional Characterization of the Effect of the C3H/HeJ Defect in Mice that Lack an Lps n Gene: In Vivo Evidence for a Dominant Negative Mutation." Journal of Immunology 162, no. 10 (1999): 5666–70. http://dx.doi.org/10.4049/jimmunol.162.10.5666.

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Abstract A point mutation in the Tlr4 gene, which encodes Toll-like receptor 4, has recently been proposed to underlie LPS hyporesponsiveness in C3H/HeJ mice (Lpsd). The data presented herein demonstrate that F1 progeny from crosses between mice that carry a ∼9-cM deletion of chromosome 4 (including deletion of LpsTlr4) and C3H/HeJ mice (i.e., Lps0 × Lpsd F1 mice) exhibit a pattern of LPS sensitivity, measured by TNF activity, that is indistinguishable from that exhibited by Lpsn × Lpsd F1 progeny and whose average response is “intermediate” to parental responses. Thus, these data provide clea

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