Log in

Relevant bibliographies by topics / Improved varieties / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Improved varieties.

Dissertations / Theses on the topic 'Improved varieties'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 18 dissertations / theses for your research on the topic 'Improved varieties.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

O'Donnell, Catherine Elizabeth. "Peruvian Food Insecurity in The Face of Recurrent Natural Disasters: A Two-Step Adoption Analysis for Improved Potato Varieties." Thesis, Virginia Tech, 2018. http://hdl.handle.net/10919/81998.

Full text

Abstract:

The International Potato Center (CIP) and Peruvian National Agricultural Research Institute (INIA) have invested a substantial amount of resources towards the development of improved potato varieties in Peru. These varieties are adaptable to the agro-ecologies of the Andes and have specific biotic and abiotic attributes. These efforts have led to the release of several prominent varieties including Canchan-INIA, Amarilis, Unica, Serranita and others. A 2013 household survey conducted by CIP was used to describe the diffusion of improved potato varieties in Peru. These data were also used to id

APA, Harvard, Vancouver, ISO, and other styles

2

Zeng, Di. "Three essays on the adoption and impacts of improved maize varieties in Ethiopia." Diss., Virginia Tech, 2014. http://hdl.handle.net/10919/64332.

Full text

Abstract:

Public agricultural research has been conducted in Africa for decades and has generated numerous crop technologies, while little is understood on how agricultural research affects the poor and vulnerable groups such as children, and how farmers' perceptions affect their adoption decisions. This dissertation helps fill this gap with three essays on adoption and impacts of improved maize varieties in rural Ethiopia. The first essay estimates poverty impacts. Field-level treatment effects on yield and cost changes with adoption are estimated using instrumental variable techniques, with treatmen

APA, Harvard, Vancouver, ISO, and other styles

3

Miquitaio, Dizimalta. "Agronomic, Physiological, and Proteomic Characterization of Three Improved Varieties of Maize (Zea mays L.)." Doctoral thesis, Universidade Nova de Lisboa, Instituto de Tecnologia Química e Biológica António Xavier, 2020. http://hdl.handle.net/10362/101969.

Full text

Abstract:

"Maize is the most important food crop in Mozambique. However, maize production is low and is cyclically impaired due to abiotic stresses such as recurrent droughts (particularly in the arid and semi-arid areas), soil infertility, floods, and cyclones events. Biotic stresses, such as pests and diseases, also affect food production. Altogether, these constraints lead to food insecurity and the need for humanitarian food aid from local and international communities. (...)"<br>N/A

APA, Harvard, Vancouver, ISO, and other styles

4

Marimo, Pricilla. "Gender Impacts of Molecular-Assisted Breeding: The Case of Insect and Disease Resistant Cassava in Nigeria." Thesis, Virginia Tech, 2009. http://hdl.handle.net/10919/33537.

Full text

Abstract:

Cassava is the main staple crop in Nigeria. Using primary data from four south eastern states in Nigeria, the study assessed the gender impacts of improved cassava varieties. Comparative statistical analysis reveals that total female labor is higher than total male in cassava production, processing and marketing. Women spend more labor days than males for planting, weeding, harvesting, marketing and processing. The total female family labor is higher for adopters of new improved cassava varieties. There is however lower family labor input for both male and female adopters for clearing and plow

APA, Harvard, Vancouver, ISO, and other styles

5

Munthali, Grace Timanyechi. "Assessing farmers’ willingness-to-way for improved common bean seed varieties in Malawi : a case study of Kasungu and Dedza districts." Diss., University of Pretoria, 2013. http://hdl.handle.net/2263/40344.

Full text

Abstract:

Common beans are one of the most important food and cash crops for most Malawians. The insufficient production of the crop in the country coupled with low yields has made scientists give much interest to the crop so that they can address the constraints to the productivity problems. In this regard, breeders have been engaged in the development and release of improved varieties of common beans which in most cases are disease resistant, high yielding, drought resistant, and fast cooking. Therefore it is the interest of this study to find the reasons why productivity of the crop is still lo

APA, Harvard, Vancouver, ISO, and other styles

6

Dibba, Lamin [Verfasser], and Manfred [Akademischer Betreuer] Zeller. "Impact evaluation of improved rice varieties and farmer training on food security and technical efficiency in The Gambia / Lamin Dibba. Betreuer: Manfred Zeller." Hohenheim : Kommunikations-, Informations- und Medienzentrum der Universität Hohenheim, 2016. http://d-nb.info/1100055436/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Myrick, Stephanie Nicole Bernice. "An Economic Impact Assessment of Cooperation-88 Potato Variety in China." Thesis, Virginia Tech, 2017. http://hdl.handle.net/10919/74871.

Full text

Abstract:

Cooperation-88 (C88) is a late blight resistant potato variety that was formally released in China in 2001 and has become popular in China's Yunnan Province. The International Potato Center (CIP) and Yunnan Normal University collaborated to produce the variety, which is one of CIP's most successful varieties. C88 is popular due to its high quality and taste, and it is used commonly in China's expanding potato chip processing market. The purpose of this study is to examine adoption of C88 in the Yunnan Province, its value chain, and economic impacts. The analysis indicates that C88 is still

APA, Harvard, Vancouver, ISO, and other styles

8

Serrat, Gurrera Xavier. "Applied biotechnology to improve Mediterranean rice varieties = Biotecnologia aplicada a la millora de varietats d’arròs mediterrànies." Doctoral thesis, Universitat de Barcelona, 2016. http://hdl.handle.net/10803/396188.

Full text

Abstract:

The current world population is over 7.4 billion and expected to exceed 9 billion in 2040, causing a 70% increase in food demand. Global environmental degradation, in the form of salinization, pollution and global warming, has also reduced the availability of suitable arable land and water sources, contributing to promote crop improvement in order to increase the potential yields. Rice (Oryza sativa) is the most widely consumed staple food for a large proportion of the world population. Classical rice breeding programs use its natural variability to create new allelic combinations which are

APA, Harvard, Vancouver, ISO, and other styles

9

O'Lone, Clare Elizabeth. "Proteomic understanding of grain germination to improve the selection of barley varieties with internationally competitive malting quality characteristics." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2024. https://ro.ecu.edu.au/theses/2798.

Full text

Abstract:

Barley (Hordeum vulgare L.) is one of the earliest domesticated cereal crops. It is used in world malt barley production, where Australia is a major exporter, representing more than 30 per cent of the world's trade. Barley is the grain of choice for malt production due to its high starch-to-protein ratio and enzyme levels that can be harnessed during germination. Malt is produced by a process called malting, which involves a three-stage controlled germination of malting barley grain. This process uses enzyme activation and de novo enzyme synthesis to modify the physical structure of the hard b

APA, Harvard, Vancouver, ISO, and other styles

10

Rajan, Mala V. "Screening and Evolution of improved varieties of mulberry for irrigated conditions." Thesis, 1997. http://hdl.handle.net/2009/1474.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Giridhar, K. "Studies on some improved varieties of mulberry and their influence on the silkworm, Bombyx mori L." Thesis, 1996. http://hdl.handle.net/2009/1335.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

"The mutagenesis of Sorghum bicolour (L.) Moench towards improved nutrition and agronomic performance." Thesis, 2009. http://hdl.handle.net/10413/993.

Full text

Abstract:

In the breeding of grain sorghum (Sorghum bicolour L. Moench) towards improved nutrition and agronomic performance, new methodologies are required to increase genetic diversity and lower the inputs required to track and screen breeding populations. Near-infrared calibration models were developed by partial least squares (PLS) and test-set validation on 364 sorghum samples to predict crude protein and moisture content on whole-grain and milled flour samples. Models using milled flour spectra were more accurately predictive than those from whole grain spectra for all constituents (eg. Protein: R

APA, Harvard, Vancouver, ISO, and other styles

13

Muange, Elijah Nzula. "Social Networks, Technology Adoption and Technical Efficiency in Smallholder Agriculture: The Case of Cereal Growers in Central Tanzania." Doctoral thesis, 2015. http://hdl.handle.net/11858/00-1735-0000-0022-5FA0-E.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Chiulele, Rogério Marcos. "Breeding cowpea (Vigna unguiculata (L.) walp.) for improved drought tolerance in Mozambique." Thesis, 2010. http://hdl.handle.net/10413/5329.

Full text

Abstract:

Cowpea yields in Mozambique can be increased through breeding farmers’ accepted cultivars with drought tolerance and stability across environments. A study was conducted in the southern region of Mozambique to: (1) determine farmers perceptions on major constraints limiting cowpea production and identify preferences regarding cultivars and traits, (2) determine the variability of selected cowpea germplasm for drought tolerance, (3) determine the gene action controlling drought tolerance, yield and yield components in cowpea, and (4) assess the genotype × environment interaction and yield stabi

APA, Harvard, Vancouver, ISO, and other styles

15

Hai, Lin [Verfasser]. "Analysis of genetic diversity among current spring wheat varieties and breeding for improved yield stability of wheat (Triticum aestivum L.) / submitted by Lin Hai." 2007. http://d-nb.info/983600791/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Rava, Albert H., and 艾柏特. "Selection of progeny from hybridization of Capsicum varieties to improve quality and agronomic traits." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/17224689726627281788.

Full text

Abstract:

碩士<br>國立屏東科技大學<br>熱帶農業暨國際合作系<br>104<br>Domesticated chili peppers (capsicum spp) have been developed by breeders through crosses and produce abundant varieties. This study aimed to investigate the growth characters and contents of capsaicinoid in different collected lines of chili pepper capsicum. Their F1 crosses sets were also investigated. The genetic variance on heritability of agronomic traits and pungency will be determined. In first experiment; we conducted morphological character identification from six commercial varieties. Estimation of broad sense heritability on all character sugge

APA, Harvard, Vancouver, ISO, and other styles

17

Sawasdee, Anuchart, and 康久安. "Screening and characterization of brittle mutants from the mutation pools of TNG67 and IR64 rice varieties and breeding to improve bacterial blight resistance." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/16932775598717804479.

Full text

Abstract:

碩士<br>國立中興大學<br>農藝學系所<br>105<br>Straw is a by-product of rice after harvest, it is majorly consisted of lignocelluloses and is difficult to be degraded in the soil. The brittle culm mutants have mutation related with decreased secondary cell wall thickness and maybe easier for degradation. IR64 and TNG67 mutation pools were developed by sodium azide in our previous breeding programs. There were 21 and 23 brittle mutant lines selected from IR64 and TNG67 mutant pools. The brittle lines have differences in brittleness score from 0 to 5. IRB3 is a brittle culm mutant of IR64, it showed a Score 3

APA, Harvard, Vancouver, ISO, and other styles

18

Froneman, Izak J. "Horticultural manipulation techniques to improve yield, fruit size and quality in 'Wai Chee' litchi (Litchi chinensis Sonn.)." Thesis, 2010. http://hdl.handle.net/10413/7891.

Full text

Abstract:

In South Africa, a shortage of litchi cultivars to expand the very short harvesting period has seriously threatened the viability of the local export orientated Litchi Industry. Only two cultivars have dominated commercial plantings for more than a century, namely ‘HLH Mauritius’ and ‘McLean’s Red’. The marketing period of litchis from South Africa coincides with large export volumes from competitor countries such as Madagascar, resulting in lower returns for local growers. To address this situation, the late season cultivar ‘Wai Chee’ was imported amongst others from Australia. ‘Wai Chee’ is

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!