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Journal articles on the topic 'Open-pollinated varieties (OPVs)'

Author: Grafiati

Published: 7 June 2025

Last updated: 2 August 2025

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1

NDOLI, ALAIN, FRÉDÉRIC BAUDRON, TESFAYE SHIFERAW SIDA, ANTONIUS G. T. SCHUT, J. VAN HEERWAARDEN, and KEN E. GILLER. "DO OPEN-POLLINATED MAIZE VARIETIES PERFORM BETTER THAN HYBRIDS IN AGROFORESTRY SYSTEMS?" Experimental Agriculture 55, no. 04 (2018): 649–61. http://dx.doi.org/10.1017/s0014479718000297.

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SUMMARYA large body of evidence demonstrates the agronomic superiority of maize hybrids over open-pollinated varieties (OPVs) in intensive monoculture. However, comparisons of the performance of hybrids and OPVs in agroforestry systems are scarce. In this study, the performance of four maize hybrids and four OPVs is compared in sole crop and under mature trees. Experiments were conducted on-farm during four seasons in Bugesera, Rwanda and two seasons in Meki, Ethiopia. Two tree species were selected in Bugesera (Grevillea robusta and Senna spectabilis) and one in Meki (Acacia tortilis), and th

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OLISA, Babafemi S., Femi E. AWOSANMI, Michael S. AKINROPO, et al. "Differential response of commercial hybrid and open pollinated maize seeds to mechanical damage during seed processing." Notulae Scientia Biologicae 13, no. 4 (2021): 10738. http://dx.doi.org/10.15835/nsb13410738.

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Hybrids and open pollinated varieties (OPVs) are two commercial maize seed types cultivated in Nigeria. Information on their response to mechanical damage during processing is limited. This study is thus aimed at assessing the response of hybrids and OPVs of maize seeds to mechanical damage which would facilitate fabrication of processing facilities suitable for either of the maize types. Six maize varieties: three hybids (‘New Kaduna’, ‘SDM-1’, and ‘JO-195’) and three OPVs (‘Sammaz 15’, ‘Sammaz 27’ and ‘Suwan-1-stry’) were used for the study. The seed samples were subjected to standard germin

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Sigigaba, Masithembe, Lelethu Mdoda, and Asanda Mditshwa. "Adoption Drivers of Improved Open-Pollinated (OPVs) Maize Varieties by Smallholder Farmers in the Eastern Cape Province of South Africa." Sustainability 13, no. 24 (2021): 13644. http://dx.doi.org/10.3390/su132413644.

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This study assesses the determinants of adoption drivers of improved open-pollinated (OPVs) maize varieties by smallholder farmers in the Eastern Cape Province of South Africa. Cross-sectional data of multi-stage random sampling was used to randomly select 150 smallholder farmers in the province. Data collection was conducted through a well-structured questionnaire administered to 150 smallholder farmers. Descriptive statistics and a logistic regression model were used for the analyses. The inferential results reveal that the majority of farmers in the study area were females (70%) with an ave

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Babić, Vojka, Natalija Kravić, Jovana Živić, et al. "Grain Quality Within ex situ and in situ Conserved Traditional White Maize Landraces." Romanian Agricultural Research 35 (2018): 129–40. http://dx.doi.org/10.59665/rar3517.

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White maize had an important role in human nutrition throughout the Western Balkan region. A great number of farmers (approximately 86% in Serbia) still grow traditional white Open Pollinated Varieties (OPVs) for human diet. Out of 2217 maize landraces stored within Maize Research Institute „Zemun Polje” (MRIZP) gene bank, more than 700 are white kernel accessions. Eighteen white maize landraces, collected in the Western Balkan region in different periods, were selected for the present study. By the evaluation of agromorphological performances and the basic chemical composition of grain, the o

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Takim, Felix, Gbedabo Olaoye, Yakeen Abayomi, et al. "Evaluation of maize grain yield in drought-prone environment." Journal of Agricultural Sciences, Belgrade 62, no. 1 (2017): 15–29. http://dx.doi.org/10.2298/jas1701015t.

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Multi-location trial data obtained between 2007 and 2014 involving open pollinated varieties (OPVs) and hybrid maize (Zea mays L.) were analysed using GGE (Genotype and Genotype x Environment) and AMMI (Additive Main Effect and Multiplicative Interaction) models to assess their performance and suitability as cultivars, and identify promising genotypes and sites for further evaluations in the different locations of the southern Guinea savanna of Nigeria. The experiments were set up as a randomized complete block design with three replications in all the locations. The plot size consisted of two

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Bello, Omolaran, Odunayo Olawuyi, Sunday Ige, et al. "Agro-nutritional variations of quality protein maize (Zea mays L.) in Nigeria." Journal of Agricultural Sciences, Belgrade 59, no. 2 (2014): 101–16. http://dx.doi.org/10.2298/jas1402101b.

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Quality protein maize (QPM) combining the enhanced levels of lysine and tryptophan with high grain yield and desirable agronomic traits could reduce food insecurity and malnutrition in West and Central Africa. Twenty-two varieties of QPM and two local checks were evaluated for agronomic characteristics and nutritional qualities in the southern Guinea savanna of Nigeria for two years (2009 and 2010). Though crude protein levels are good indicators of quality, amino acid composition analyses, especially lysine and tryptophan that would provide a final proof are in progress. The genotypes compris

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Asungre, Peter Anabire, Richard Akromah, Alexander Wireko Kena, and Prakash Gangashetty. "Genotype by Environment Interaction on Grain Yield Stability and Iron and Zinc Content in OPV of Pearl Millet in Ghana Using the AMMI Method." International Journal of Agronomy 2021 (November 8, 2021): 1–10. http://dx.doi.org/10.1155/2021/9656653.

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Twenty-two open-pollinated varieties (OPVs) of pearl millet (Pennisetum glaucum) genotypes were tested in two locations for three seasons in Ghana to estimate the magnitude of genetic variability, heritability, and stability for grain yield and related traits and grain micronutrients among the varieties. General analysis of variance within and across locations and years revealed very highly significant variability ( p < 0.01 ) among the genotypes. The additive main effects and multiplicative interaction (AMMI) analyses revealed significant genotype × environment interaction (GEI) that influ

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Kambanje, Ardinesh, Amon Taruvinga, Abbyssinia Mushunje, Charles Mutengwa, and Saul Ngarava. "Determinants of Food Security Status amongst Smallholder Farmers Utilizing Different Maize Varieties in OR Tambo District, South Africa." Journal of Social Sciences Research, no. 62 (February 5, 2020): 133–39. http://dx.doi.org/10.32861/jssr.62.133.139.

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Maize is an important staple crop for poverty reduction and global food security in Sub Saharan Africa. Food insecurity can be combated through adoption of productivity improving technologies, which include improved maize varieties. In that endeavour, South Africa has promoted various improved maize varieties which include open pollinated varieties (OPVs), hybrids, and genetically modified (GM) varieties. Despite this, the traditional landrace varieties have also been dominating in the country. However, the household food insecurity problem in the Eastern Cape Province of South Africa may sign

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Kaul, Jyoti, Ramesh Kumar, Usha Nara, et al. "Development of Database of Maize Hybrids and Open Pollinated Varieties Released and Notified for Cultivation in India." Journal of Agricultural Science 9, no. 10 (2017): 105. http://dx.doi.org/10.5539/jas.v9n10p105.

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The maize database, first of its kind in India, is a central repository for cultivars i.e. hybrids and open pollinated varieties (OPVs) notified for cultivation in India since the inception of All India Coordinated Maize Improvement Project (AICMIP) in 1957. The database includes the information on cultivars developed from public as well as private breeding programmes. Besides, information on registered germplasm is also given. The database carries image gallery showcasing photographs of cobs/standing crop of the public-bred cultivars released after 1993.The database also presents information

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KAMARA, A. Y., A. MENKIR, B. BADU-APRAKU, and O. IBIKUNLE. "The influence of drought stress on growth, yield and yield components of selected maize genotypes." Journal of Agricultural Science 141, no. 1 (2003): 43–50. http://dx.doi.org/10.1017/s0021859603003423.

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The risk of drought is high in the Sudan savannah zone of West and Central Africa because rainfall in this area is unpredictable in quantity and distribution. Thus, improved maize genotypes tolerant to drought could stabilize maize grain yield in this zone, where recurrent drought threatens grain production. Six maize genotypes, two each of hybrids, open-pollinated varieties (OPVs) and landraces, were evaluated for tolerance to terminal water deficit before flowering. Water deficit significantly reduced growth, grain yield and yield components of the maize genotypes. Significant differences we

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Muhammad, Azam, Saeed Beena, Khan Sajjad, and Zafar Danish. "Exploring the effect of nitrogen levels on yield and yield attributes of diverse open-pollinated varieties (OPVs) of maize (Zea mays)." Advances in Agriculture and Biology 6, no. 1 (2023): 61–68. https://doi.org/10.63072/aab.23008.

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A field trial was carried out during the Kharif season of 2022 at the Agronomy Research Farm, University of Swabi. The trial was designed as a 3×3 factorial experiment, involving three varieties (CIMMYT FATA, DSW, and Kaptan) which were allocated to the main plots. Three levels of nitrogen (200, 150, and 100 kg ha<sup>-1</sup>) were applied to the subplots. A plot size of 22.5 m<sup>2</sup>, having 6 rows 75 cm apart with plant-to-plant distance of 25 cm was maintained. The concerned maize varieties were sown at the first week of July 2022. The required amount of N was applied at the tim

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Ige, S. A., O. B. Bello, and O. Alake. "Combining Ability and Heterosis of Tolerance to Low Soil Nitrogen in Tropical Maize Cultivars Derived from Two Breeding Eras." Open Agriculture 3, no. 1 (2018): 339–47. http://dx.doi.org/10.1515/opag-2018-0037.

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Abstract Low soil nitrogen is one of the principal abiotic stresses affecting maize productivity in Sub-saharan Africa. Field studies were conducted at the International Institute of Tropical Agriculture (IITA), Ibadan during the cropping seasons for three years, from 2010 to 2012, with ten open pollinated maize varieties (OPVs) derived from two breeding eras (1 and 2). The ten OPVs and their crosses were evaluated under high-N and low-N conditions. The aim was to identify superior populations that may be useful sources genes for inbred line extraction and hybrid development for grain yield. U

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Zambrano, José Luis, Carlos F. Yánez, and Carlos A. Sangoquiza. "Maize Breeding in the Highlands of Ecuador, Peru, and Bolivia: A Review." Agronomy 11, no. 2 (2021): 212. http://dx.doi.org/10.3390/agronomy11020212.

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Maize is one of the most important staple crops in the highlands of the Andean region of Ecuador, Peru, and Bolivia. Most seeds come from landraces, with their own kernel characteristics. The kernels are used for the elaboration of traditional dishes and other elaborates for human consumption. In this region, maize breeding is conducted mainly by public institutions. In this review, we outline the methodology that has been used by the maize breeding programs (MBPs) of the National Institutes for Agricultural Research and other institutions in the highlands of Ecuador, Peru, and Bolivia during

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Guzzon, Filippo, Luis Walquer Arandia Rios, Galo Mario Caviedes Cepeda, et al. "Conservation and Use of Latin American Maize Diversity: Pillar of Nutrition Security and Cultural Heritage of Humanity." Agronomy 11, no. 1 (2021): 172. http://dx.doi.org/10.3390/agronomy11010172.

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Latin America is the center of domestication and diversity of maize, the second most cultivated crop worldwide. In this region, maize landraces are fundamental for food security, livelihoods, and culture. Nevertheless, genetic erosion (i.e., the loss of genetic diversity and variation in a crop) threatens the continued cultivation and in situ conservation of landrace diversity that is crucial to climate change adaptation and diverse uses of maize. We provide an overview of maize diversity in Latin America before discussing factors associated with persistence of large in situ maize diversity, c

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Sunday, Ige AYODELE. "HETEROSIS OF SOME TROPICAL MAIZE GENOTYPES DERIVED FROM TWO DIFFERENT MAIZE BREEDING ERAS." Bangladesh Journal of Plant Breeding and Genetics 30, no. 1 (2017): 01–10. http://dx.doi.org/10.3329/bjpbg.v30i1.36261.

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Heterosis for maize grain yield was studied to identify cross combinations that may be useful sources for inbred line extraction, recurrent selection and, to estimate changes in the maize grain yield heterosis across two breeding eras in the tropics. Field studies were conducted at the International Institute of Tropical Agriculture (IITA), Ibadan during the cropping seasons of 2010, 2011 and 2012, with 10 open pollinated maize varieties (OPVs) derived two breeding eras (1 and 2). The ten OPVs and the crosses generated from them were evaluated under stem borer infested and non-infested, high-N

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M, Sibanda, Mushunje A, and Mutengwa C S. "Factors influencing the demand for improved maize open pollinated varieties (OPVs) by smallholder farmers in the Eastern Cape Province, South Africa." Journal of Cereals and Oilseeds 7, no. 2 (2016): 14–26. http://dx.doi.org/10.5897/jco2015.0142.

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Gupta, Shashi Kumar, Ponnaiah Govintharaj, and Ruchika Bhardwaj. "Three-Way Top-Cross Hybrids to Enhance Production of Forage with Improved Quality in Pearl Millet (Pennisetum glaucum (L.) R. Br.)." Agriculture 12, no. 9 (2022): 1508. http://dx.doi.org/10.3390/agriculture12091508.

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Three-way top-cross hybrids of pearl millet were evaluated along with a popular single- cross check hybrid (PAC 981) for forage yield and quality traits under a multi-cut (three cuts) system across multiple years, seasons and sites in India. Total green forage yield (TGFY) varied from 36 to 53 t ha−1, and two hybrids outyielded the check hybrid for both total dry forage yield (TDFY) and forage quality (CP; Crude protein, and IVOMD; In vitro organic matter digestibility) traits. A set of promising three-way top-cross hybrids evaluated along with a set of promising open-pollinated varieties (OPV

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Mare, Marco. "Adaptability performance of cotton hybrids under dry conditions of Zimbabwe." International Journal of Agronomy and Agricultural Research (IJAAR) 26, no. 2 (2025): 10–18. https://doi.org/10.5281/zenodo.15470274.

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Cotton (<em>Gossypium hirsutum </em>L.) is one of the most prominent and important industrial crops in Zimbabwe. Cotton production is largely practiced by smallholder farmers in Zimbabwe with an average of one hectare for every farmer. Production is mainly done in averagely drier parts of the country with considerably high temperatures and rainfall amounts averaging 500mm per annum (AMA Cotton Country Report, 2022). The adverse effects of climate change have raised concerns regarding the cotton sector’s performance in the near future. However, to ascertain the significance and poten

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Serba, D. D., O. Sy, M. D. Sanogo, et al. "Performance of dual-purpose pearl millet genotypes in West Africa: Importance of morphology and phenology." African Crop Science Journal 28, no. 4 (2020): 481–98. http://dx.doi.org/10.4314/acsj.v28i4.1.

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Pearl millet (Pennisetum glaucum (L.) R. Br.) is a cereal crop vital for food security in West and Central Africa. Its byproducts also serve as fodder for livestock, especially during dry seasons. The objective of this study was to evaluate selected genotypes from West African pearl millet breeding programmes, for dual-purpose (grain and fodder) and elucidate prospects for future breeding. A total of 83 open-pollinated varieties (OPVs), five composites, six landraces, one synthetic and five hybrids were evaluated at 14 environments in Burkina Faso, Mali, Niger and Senegal during the rainy seas

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Khandelwal, Vikas, Sanjana Reddy, C. Tara Satyavathi, et al. "Identification of stable cultivars of pearl millet (Pennisetum glaucum (L.) R. Br.) based on GGE Biplot and MTSI index." Indian Journal of Genetics and Plant Breeding (The) 84, no. 04 (2024): 668–78. https://doi.org/10.31742/isgpb.84.4.18.

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The present study was conducted to evaluate a total of 20 hybrids and five open-pollinated (OPVs) released varieties for their adaptability and stability and to identify traits that contributed towards yield increase under diverse ecological conditions. Variation due to location was predominantly greater, emphasizing the importance of specific adaptation. Thus, two mega environments (ME) were identified, ME1 bearing arid locations, Bikaner, Mandor and Jaipur with MPMH 17 as winning hybrid and ME2 with semi-arid locations, Gwalior, Hisar and Jamnagar with KSB and MP 7792 as winning hybrids. Hyb

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Ardenghi, Nicola Maria Giuseppe, Graziano Rossi, and Filippo Guzzon. "Back to beaked: Zea mays subsp. mays Rostrata Group in northern Italy, refugia and revival of open-pollinated maize landraces in an intensive cropping system." PeerJ 6 (July 4, 2018): e5123. http://dx.doi.org/10.7717/peerj.5123.

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Crop landraces are fundamental resources to increase the eroded genepool of modern crops in order to adapt agriculture to future challenges; plus, they are of immeasurable heritage and cultural value. Between the 1940s and the 1960s open-pollinated varieties (OPVs) of flint and semi-flint maize in Europe were almost completely replaced by high-yielding hybrid dent cultivars selected in North America. No comprehensive assessment was performed after the 1950s to understand which maize genetic resources survived genetic erosion in northern Italy, an area characterized by a high degree of landrace

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Job, Anthony, Innocent Iseghohi, Ayodeji Abe, et al. "Genetic Analysis of Agronomic and Fall Armyworm-Resistance Traits in Maize Hybrids with Varying Levels of Resistance to Stem Borers." Agronomy 12, no. 12 (2022): 3042. http://dx.doi.org/10.3390/agronomy12123042.

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Stem borer (SB) and more recently, fall armyworm (FAW) are serious economic pests in maize production in sub-Saharan Africa. It is hypothesized that SB-resistant germplasm may confer resistance against FAW. However, the performance of SB-resistant lines in hybrid combinations and the inheritance of FAW-resistant traits under variable FAW infestations have not been reported. This study was conducted to (i) obtain information on the inheritance of agronomic and FAW-resistant traits under variable FAW infestations; (ii) identify hybrids combining high grain yield (GYLD) and stability under FAW in

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Kandarkar, Kuldeep, Viswanathan Palaniappan, Phool Chand Gupta, et al. "Identification of Promising Three-Way Hybrids of Pearl Millet for Drought-Prone Environments of North-Western India." Agronomy 13, no. 11 (2023): 2813. http://dx.doi.org/10.3390/agronomy13112813.

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Stable, drought-tolerant, and high-yielding dual-purpose hybrids are needed for cultivation in the drought-prone areas of India. Working towards this, this study was conducted to assess the associations between grain yield and its component traits and the relationships among genotypes to select the most promising hybrids based on multiple traits. In the present investigation, thirty newly developed three-way hybrids (TWHs), along with four popular commercial single-cross hybrids and two open pollinated varieties (OPVs) were evaluated at three sites in the drought-prone ecology of India during

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Hlatywayo, Regina, Blessing Mhlanga, Upenyu Mazarura, Walter Mupangwa, and Christian Thierfelder. "Response of Maize (Zea mays L.) Secondary Growth Parameters to Conservation Agriculture and Conventional Tillage Systems in Zimbabwe." Journal of Agricultural Science 8, no. 11 (2016): 112. http://dx.doi.org/10.5539/jas.v8n11p112.

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<p>Previous, research focused mainly on the effects of conservation agriculture (CA) and conventional practices (CP) on crop yield mostly. A study was conducted at five sites in Zimbabwe from 2012 to 2014 to investigate effects of CA and CP practices on emergence, chlorophyll content, early vigour and grain yield of different maize varieties using 12 hybrids and 4 open pollinated varieties (OPVs). The experiment was laid as a 4 × 4 alpha lattice design with three replications. Emergence was higher under CA (75%) at University of Zimbabwe (UZ) in 2012/13 and Domboshawa Training Centre (DT

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Koirala, KB, MP Tripathi, K. Seetharam, MT Vinayan, and PH Zaidi. "Field Evaluation of Heat Stress-Resilient Maize Hybrids for Improved and Stable Maize Production in Nepal." SAARC Journal of Agriculture 19, no. 1 (2021): 27–43. http://dx.doi.org/10.3329/sja.v19i1.54776.

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In recent years, National Maize Research Program (NMRP) aimed a paradigm shift from open-pollinated varieties (OPVs) towards hybrid maize to achieve self-sufficiency in maize for food, feed, and hybrid seed within the country. In this mission, it is necessary to identify and deploy high-yielding stress-resilient maize hybrids that can cope with climate change effects, including heat stress. Under the project “Heat Tolerant Maize for Asia (HTMA)”, NMRP introduced the hybrids that performed better in previous years in different environments from International Maize and Wheat Improvement Center (

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JAVED, HM, W. AKBAR, M. ABBAS, et al. "ENHANCING PRE AND POST VEGETATIVE HEAT RESILIENCE AND YIELD POTENTIAL IN THE NEWLY RELEASED MAIZE VARIETY "SAHIWAL GOLD" THROUGH MODIFIED SELECTION." Biological and Clinical Sciences Research Journal 2024, no. 1 (2024): 855. http://dx.doi.org/10.54112/bcsrj.v2024i1.855.

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Maize is well-anchored crop across the globe due to its nutritional profile, multipurpose usage, and underlying financial benefits. Growing of open-pollinated maize varieties (OPVs) is a traditional trend and is still followed by a huge community of small farmers in most of the developing world. Improvement in yield potential is always inevitable and requires a purposeful and definite strategy. The current climate scenario loaded with heat escalation and extreme fluctuations is creating uncertainty and unsustainability through acute yield losses in domesticated crops. The breeding strategy of

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Samijan, S., S. Jauhari, and S. Minarsih. "Improved Crop Management on Open-Pollinated Maize (OPV) in The High Upland of Central Java Indonesia." BIO Web of Conferences 69 (2023): 02010. http://dx.doi.org/10.1051/bioconf/20236902010.

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In the highlands of Central Java, maize remains a staple food, but low yields are common due to limited use of local varieties and cultivation techniques. To address this, a study was conducted in Bojong District, Central Java, focusing on intensified maize cultivation through improved varieties, spacing, and fertilization. On-farm experiments were carried out, comparing different treatments with recommended practices. Sukmaraga maize showed the highest yields when following suggested spacing and fertilization, outperforming local yellow and white varieties significantly. The study revealed th

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Alamu, Emmanuel Oladeji, Busie Maziya-Dixon, Abebe Menkir, Olorunfemi Olaofe, and Alexandra Martha Zoya Slawin. "Bioactive compounds of freshly harvested open pollinated varieties (OPV) of orange maize (zea mays): Varietal, maturity, and boiling methods effects." Cogent Chemistry 4, no. 1 (2018): 1507489. http://dx.doi.org/10.1080/23312009.2018.1507489.

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Akintibu, T. S., A. Oluwaranti, and M. A. B. Fakorede. "The Impacts of Climatic Variability on the Grain Yield Performance of Open Pollinated Varieties (OPV) of Maize in a Rainforest Location of Nigeria." Journal of Agriculture and Ecology Research International 24, no. 5 (2023): 28–36. http://dx.doi.org/10.9734/jaeri/2023/v24i5539.

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Aims: The objectives of the study were to examine the effects of climatic factors on maize yield and identify best planting date for maize in Rainforest Agroecology of Nigeria. Study Design: Grain yield of seventeen open pollinated varieties of maize evaluated in 21 randomly selected environments in the Rainforest Agroecology of Nigeria were used for the study. Each field experiment was laid out in a randomized complete block design with four replications and 5 m long single-row plots spaced at 0.75 m apart and three seeds were planted 0.5 m apart within the row. Place and Duration

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Bolaños, Jorge. "Bases fisiológicas del progreso genético en cultivares del Programa Regional de Maíz (PRM)." Agronomía Mesoamericana 5 (June 15, 2016): 67. http://dx.doi.org/10.15517/am.v5i0.25055.

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The germplasm development has been one of the most outstanding achievements of the PRM (Regional Corn Program). The objective of this test was to understand the physiological basis of genetic gain in the most important corn cultivars from the PRM, by determining the parameters of important physiological, phenological and morphological standards on the elabora-tion of yields. Nine cultivars (5 hybrids and 4 open-pollinated ed varieties OPV's) were evaluated in a Complete Ran-domized block design with 3 replications across 11 diverse environments of the region. The hybrids consistently Clot yiel

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Paudel, Min N. "Evaluation of Hybrid and OPV Maize Varieties for Grain Yield and Agronomic Attributes under Farmer's Field Conditions at Dukuchhap." Nepal Agriculture Research Journal 9 (November 30, 2014): 17–20. http://dx.doi.org/10.3126/narj.v9i0.11637.

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Field experiments were conducted during two consecutive years 2006 and 2007 in full season of maize (May-Sep) at Dukuchhap, Lalitpur to find out impact of growing hybrid and OPV maize in different rows combinations with respect to their pure stands in same environment of growing and to sort out non-lodging maize varieties. The experiments consisted of an open pollinated variety (OPV) 'Deuti' and hybrid 'Gaurab' in different row combinations (50% hybrid + 50% OPV, 75% hybrid + 25% OPV, 75% OPV + 25% hybrid plus their pure stands). The results showed that Gaurab (yellow, flint type) and Deuti (w

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Gangashetty, Prakash I., Mohammed Riyazaddin, Moussa Daouda Sanogo, et al. "Identification of High-Yielding Iron-Biofortified Open-Pollinated Varieties of Pearl Millet in West Africa." Frontiers in Plant Science 12 (September 22, 2021). http://dx.doi.org/10.3389/fpls.2021.688937.

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Pearl millet is a predominant food and fodder crop in West Africa. This study was carried out to test the newly developed open-pollinated varieties (OPVs) for field performance and stability for grain yield, grain iron (Fe), and grain zinc (Zn) contents across 10 locations in West Africa (i.e., Niger, Nigeria, Mali, Burkina Faso, Senegal, and Ghana). The test material consisted of 30 OPVs, of which 8 are Fe/Zn biofortified. The experiment was conducted in a randomized complete block design in three replications. ANOVA revealed highly significant variability for grain yield and micronutrient tr

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Yu, Qingqing, Yao Ling, Yanli Xiong, et al. "RAD-seq as an effective strategy for heterogenous variety identification in plants—a case study in Italian Ryegrass (Lolium multiflorum)." BMC Plant Biology 22, no. 1 (2022). http://dx.doi.org/10.1186/s12870-022-03617-6.

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AbstractThe primary approach for variety distinction in Italian ryegrass is currently the DUS (distinctness, uniformity and stability) test based on phenotypic traits. Considering the diverse genetic background within the population and the complexity of the environment, however, it is challenging to accurately distinguish varieties based on DUS criteria alone. In this study, we proposed the application of high-throughput RAD-seq to distinguish 11 Italian ryegrass varieties with three bulks of 50 individuals per variety. Our findings revealed significant differences among the 11 tested varieti

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Emeraghi, Mary, Innocent Iseghohi, Jacob Idohou, et al. "Yield assessment of new streak-resistant topcross maize hybrids in Benin." Open Agriculture 9, no. 1 (2024). https://doi.org/10.1515/opag-2022-0370.

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Abstract Maize (Zea mays L.) is the foremost cereal consumed in Benin but its production is constrained by the lack of access to high-quality seeds for intensification of the crop; hence, the continued cultivation of disease-susceptible, low-yielding, and open-pollinated varieties (OPVs). The study (i) evaluated the agronomic performance and heterosis of topcross hybrids (THs) developed from a cross between new streak-resistant inbred lines and Benin-adapted OPVs, (ii) estimated the combining ability of the parental materials for grain yield (GY), and (iii) assessed the relationship between GY

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Sanjana Reddy, P., C. Tara Satyavathi, Vikas Khandelwal, et al. "Performance and Stability of Pearl Millet Varieties for Grain Yield and Micronutrients in Arid and Semi-Arid Regions of India." Frontiers in Plant Science 12 (May 31, 2021). http://dx.doi.org/10.3389/fpls.2021.670201.

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Pearl millet [Pennisetum glaucum (L.) R. Br.] is grown under both arid and semi-arid conditions in India, where other cereals are hard to grow. Pearl millet cultivars, hybrids, and OPVs (open pollinated varieties) are tested and released by the All India Coordinated Research Project on Pearl Millet (AICRP-PM) across three zones (A1, A, and B) that are classified based on rainfall pattern. Except in locations with extreme weather conditions, hybrids dominate pearl millet growing areas, which can be attributed to hybrid vigor and the active role of the private sector. The importance of OPVs cann

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Azam, Muhammad, Beena Saeed, Sajjad Khan, and Danish Zafar. "Exploring the effect of nitrogen levels on yield and yield attributes of diverse open-pollinated varieties (OPVs) of maize (Zea mays)." Advances in Agriculture and Biology 6, no. 1 (2023). https://doi.org/10.63072/aab.23008.

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A field trial was carried out during the Kharif season of 2022 at the Agronomy Research Farm, University of Swabi. The trial was designed as a 3×3 factorial experiment, involving three varieties (CIMMYT FATA, DSW, and Kaptan) which were allocated to the main plots. Three levels of nitrogen (200, 150, and 100 kg ha−1) were applied to the subplots. A plot size of 22.5 m2, having 6 rows 75 cm apart with plant-to-plant distance of 25 cm was maintained. The concerned maize varieties were sown at the first week of July 2022. The required amount of N was applied at the time of second irrigation using

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Alamu, Emmanuel Oladeji, Busie Maziya-Dixon, Abebe Menkir, Michael Adesokan, and Olorunfemi Olaofe. "Assessment of Functional and Pasting Properties of Fresh Orange Maize Hybrids and Open-Pollinated Varieties as Influenced by Genotype, Harvesting Time, and Growing Location." Frontiers in Nutrition 8 (November 24, 2021). http://dx.doi.org/10.3389/fnut.2021.757728.

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The study evaluates the effects of genotype, maturity, and growing location on the functional and pasting properties of freshly harvested orange maize hybrids and open-pollinated varieties (OPVs). Eight fresh orange maize hybrid and eight fresh maize OPV, including the control, were harvested at three stages: 20, 27, and 34 days after planting (DAP). The freshly harvested maize samples were lyophilized and characterized for the pasting and functional properties using standard laboratory methods. The peak viscosity, final viscosity, and swelling power of the OPVs increased between 20 and 27 DAP

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RAI, K. N., O. P. YADAV, M. GOVINDARAJ, et al. "Grain iron and zinc densities in released and commercial cultivars of pearl millet (Pennisetum glaucum)." Indian Journal of Agricultural Sciences 86, no. 3 (2016). http://dx.doi.org/10.56093/ijas.v86i3.56832.

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Crop biofortification is a cost-effective and sustainable agricultural strategy to reduce micronutrient malnutrition arising from iron (Fe) and zinc (Zn) deficiencies. A large number of hybrids and open-pollinated varieties (OPVs) of pearl millet [Pennisetum glaucum (L.) R. Br.] have been released and/or commercialized in India. Eighteen OPVs and 15 high-Fe candidate hybrids were evaluated in multi-location trials for Fe and Zn density to identify those with high density of these micronutrients. The Fe density in OPVs varied from 42 mg/kg to 67 mg/kg, and Zn density from 37 mg/kg to 52 mg/kg w

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Kumar, Amalendu, and K. M. SIngh. "Maize Production under Abiotic Stress Conditions: An Empirical Analysis." Journal of AgriSearch 4, no. 2 (2017). http://dx.doi.org/10.21921/jas.v4i2.7789.

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Maize in Samastipur is grown during kharif season at 22% of cropped area, during Rabi season on less than 12% area, as sole crop and 26% as intercrop. However summer maize occupies only 6 percent of the cropped area in the region. The district frequently faces problems of abiotic stress due to flash floods and drought conditions. Keeping in view frequent abiotic stress faced by farmers, the present study was planned and data solicited from 120 farmers under different categories from six villages selected from Patori and Vidhyapatinagar blocks of, Samastipur district, Bihar. The study finds tha

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Chimonyo, V. G. P., C. S. Mutengwa, C. Chiduza, and L. N. Tandzi. "Characteristics of maize growing farmers, varietal use and constraints to increase productivity in selected villages in the Eastern Cape province of South Africa." South African Journal of Agricultural Extension (SAJAE) 48, no. 2 (2020). http://dx.doi.org/10.17159/2413-3221/2020/v48n2a538.

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ABSTRACT The need to increase self-sufficiency of rural agricultural systems has been a centre of focus for many extension programs aimed at rural development and improved livelihoods. Numerous biotic, abiotic and socio-economic factors affect maize production for resource poor farmers in the Eastern Cape (EC), which is one of the poorest Provinces in South Africa. Focus group discussions and semi-structured questionnaires were used to identify farmer characteristics, and specific production constraints influencing maize productivity in Jixini and Mkhwezo villages, of O. R. Tambo District in t

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Gokoma, Stanley, Casper N. Kamutando, Muthulisi Siwela, and John Derera. "A retrospective analysis of maize performance under low nitrogen stress conditions in sub-Saharan Africa." Frontiers in Agronomy 7 (April 25, 2025). https://doi.org/10.3389/fagro.2025.1490815.

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IntroductionFertilizer use in sub-Saharan Africa (SSA) is the lowest in theworld and has stagnated. Consequently low nitrogen (N) stress is one of the principal constraints to maize yields in this region. Therefore improving nitrogen use efficiency of maize varieties will result in higher nitrogen recovery rates, leading to less leaching of nitrogen as well as loss through nitrification and ammonification. This study aimed to: 1) Investigate the relationship between grain yield under low N and optimal conditions; and 2) Establish the level of variability in low N tolerance among elite Eastern

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K.O.G.H. Ruwanthika, M.L.A.M.S. Munasinghe, and R.A.U.J. Marapana. "Nutrient analysis of local pumpkin varieties (Cucurbita spp.) grown in dry zone of Sri Lanka and development of a value-added product." Vidyodaya Journal of Science 26, no. 01 (2023). http://dx.doi.org/10.31357/vjs.v26i01.6410.

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  Cucurbita spp. generally recognized as pumpkins in Sri Lanka, is a commonly grown vegetable in the dry and intermediate zones in the island. C. maxima and C. moschata are the highly popularized cucurbits and they include number of varieties including open pollinated varieties (OPVs), hybrid and imported varieties. The study was aimed to conduct a nutrient analysis of 7 pumpkin varieties collected from dry zone low country 1b (DL1b) agro-ecological region of Sri Lanka and development of a value-added product considering the nutrient composition of the varieties. The proximate, min

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Ngango, Jules, and Seungjee Hong. "Improving farm productivity through the reduction of managerial and technology gaps among farmers in Rwanda." Agriculture & Food Security 10, no. 1 (2021). http://dx.doi.org/10.1186/s40066-020-00284-4.

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Abstract Background Rwanda and most parts of sub-Saharan Africa face severe challenges of increasing maize productivity, which has direct consequences on food security. Due to these challenges, policy-makers have paid particular attention to finding the cost-effective strategies of boosting maize production. In an effort to increase productivity, the literature suggests that the adoption of yield-enhancing technologies and production efficiency should be given priority. The objective of this study is to examine and compare the technical efficiency and technological gaps of maize farms that gro

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Galani, Yamdeu Joseph Hubert, Ivy S. Ligowe, Martin Kieffer, et al. "Conservation Agriculture Affects Grain and Nutrient Yields of Maize (Zea Mays L.) and Can Impact Food and Nutrition Security in Sub-Saharan Africa." Frontiers in Nutrition 8 (January 26, 2022). http://dx.doi.org/10.3389/fnut.2021.804663.

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Maize is a major staple and plays an essential role in food and nutrition security in Sub-Saharan Africa (SSA). Conservation agriculture (CA), a climate-smart agriculture practise based on minimum soil disturbance, crop residue retention, and crop diversification, has been widely advocated but without extensive research on the impact it may have on maize nutrient composition, and food and nutrition security. This study assessed the grain yield, macro- and micronutrient mineral content, and nutrient yield of eight maize varieties grown in Malawi, and how these are affected by CA practises over

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Dutta, Sonali, Felix T. Sattler, Anna Pucher, et al. "Heterosis and combining abilities in a diverse seven-parent pearl millet population diallel tested in West Africa." Euphytica 217, no. 12 (2021). http://dx.doi.org/10.1007/s10681-021-02939-0.

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AbstractPearl millet [Pennisetum glaucum (L.) R. Br.] is an important food-security crop to smallholder farmers in West Africa (WA). Breeding for high yield and stability is a major challenge in the harsh environments of WA but could be tackled by a more systematic exploitation of hybrid vigor and heterosis in breeding of both open-pollinated varieties (OPVs) and different types of hybrids. Knowledge of combining ability patterns and quantitative-genetic parameters is required for an efficient development of hybrid vigor and heterosis in breeding programs. Hence, our objectives were to complem

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Gautam, Shriniwas, Dil Bahadur Rahut, Danice Brown Guzman, et al. "Does subsidizing seed help farmers? Nepal's rice seed subsidies." Development Policy Review, July 29, 2024. http://dx.doi.org/10.1111/dpr.12802.

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AbstractMotivationImproved seed adoption can increase yield, enhance food security, improve livelihoods, and reduce poverty. Although many governments in the global South use seed subsidies to achieve these outcomes, the success and efficiency of input subsidies is subject to debate.Most smallholders in Nepal lack information and finance to access improved technologies, including improved seeds. To address this, Nepal's universal seed subsidy programme (SSP) began in 2012. SSP offers participants up to 50% off the price of rice seed from improved varieties.PurposeWe evaluate the impact of SSP

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Ares, Aitana, Joana Costa, Carolina Joaquim, et al. "Effect of Low-Input Organic and Conventional Farming Systems on Maize Rhizosphere in Two Portuguese Open-Pollinated Varieties (OPV), “Pigarro” (Improved Landrace) and “SinPre” (a Composite Cross Population)." Frontiers in Microbiology 12 (February 26, 2021). http://dx.doi.org/10.3389/fmicb.2021.636009.

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Maize is one of the most important crops worldwide and is the number one arable crop in Portugal. A transition from the conventional farming system to organic agriculture requires optimization of cultivars and management, the interaction of plant–soil rhizosphere microbiota being pivotal. The objectives of this study were to unravel the effect of population genotype and farming system on microbial communities in the rhizosphere of maize. Rhizosphere soil samples of two open-pollinated maize populations (“SinPre” and “Pigarro”) cultivated under conventional and organic farming systems were take

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Ares, Aitana, Joana Costa, Carolina Joaquim, et al. "Effect of Low-Input Organic and Conventional Farming Systems on Maize Rhizosphere in Two Portuguese Open-Pollinated Varieties (OPV), "Pigarro" (Improved Landrace) and "SinPre" (a Composite Cross Population)." Frontiers in Microbiology 12 (February 26, 2021). https://doi.org/10.3389/fmicb.2021.636009.

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Maize is one of the most important crops worldwide and is the number one arable crop in Portugal. A transition from the conventional farming system to organic agriculture requires optimization of cultivars and management, the interaction of plant–soil rhizosphere microbiota being pivotal. The objectives of this study were to unravel the effect of population genotype and farming system on microbial communities in the rhizosphere of maize. Rhizosphere soil samples of two open-pollinated maize populations (“SinPre” and “Pigarro”) cultivated under conventional and org

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