Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 14 of 14 for “"hybrid seed"”.
-
Factors involving isolation in production of hybrid seed corn
Thesis (M.S.)--Michigan State College of Agriculture and Applied Science. Dept. of Farm Crops, 1949
-
Pollinator Movement and Pollen Transfer in Hybrid Seed Canola
Production of hybrid seed canola requires the transfer of pollen from hermaphroditic (‘male’) to male-sterile (‘female’) plants, facilitated by managed pollinators (honey and leafcutter bees) and wild pollinators. I assessed pollinators in fields of hybrid seed canola located in Southern Alberta to …
-
Experimental Production and Performance of Hybrid Soybean Varieties
The inability to produce large quantities of seed and/or to achieve economic levels of heterosis are major problems in most self-pollinated crops, including soybeans {Glycine max (L.) Merr.}. However, very little work has been done on hybrid soybeans. In all previous reports on hybrid soybeans, the …
-
Agronomic performance of soybean [Glycine max (L.) Merr.] hybrids
… have been shown to produce large quantities of hybrid seed that can be useful for the identification of heterotic patterns in soybean. This procedure was used in this study to produce hybrid seed for the conduct of replicated yield trials. The objectives were: (1) to evaluate yield in hybrid …
-
Engineering apomixis in plants to stabilize intergenerational hybrid vigor
Apomixis is the production of seeds asexually in plants, whereby clonal progeny have an identical genotype as the mother plant (1). In natural apomicts, mechanisms of reproduction are very diverse but carry potential for use in agriculture. If apomixis is engineered in crops it could be used to …
-
The kernel of doubt : agricultural biotechnology, braided temporalities, and agrarian environments in India
… the Indian agricultural company, Maharashtra Hybrid Seed Company (Mahyco), and the U.S. based agrochemical company, Monsanto, which is now acquired by byer. The way it translated in practice was that, the Indian seed companies purchased seeds from MMB and through conventional breeding …
-
Microfinance and Mobile phones: an economic analysis of the perceptions, management and measurement of environmental risk in rural Kenya
… weather index insurance that was bundled with a hybrid seed product and available over several seasons. The first empirical chapter econometrically explores the role of basis risk in the continued uptake of the bundled index insurance product. The findings conclude that localised experience of …
-
Epidemiological Studies of Northern Corn Leaf Blight on Corn Inbreds: Loss Assessment and Disease Modeling
… to stress (e.g. disease) and yield less than hybrids. Inbreds are grown to produce hybrid seed and are intensively managed because of the need to control pollen and fungicidal control of disease on inbreds is economically feasible. Little is known, however, of the exact quantitative …
-
Introgression of genes from rape to wild turnip
… germination, establishment and reproduction of hybrid progeny. The goal of this thesis was to generate data on as many steps in this process as possible and integrate them into a predictive statistical model to estimate the likelihood of successful introgression under a range of scenarios. Rape …
-
Ambiguity and credence quality: Implications for technology adoption
Use of fertilizer and hybrid seed remains low in much of Sub-Saharan Africa. A possible contributor to low adoption is that farmers are uncertain about the quality of agricultural inputs available to them. While previous studies have shown that risk and uncertainty preferences are relevant to the …
-
On farms and in laboratories: maize seed technologies and the unravelling of relational agroecological knowledge in South Africa
… Since the 1900s the development of maize seed has increasingly shifted location as scientific maize breeding has come to dominate its production. In this time maize seed has changed form, from open pollinated varieties (OPVs) to hybrid seed, and most recently to genetically modified (GM) …
-
Dissecting key biomass traits through traditional QTL mapping, exploring novel functional genomics approaches, and investigating self-incompatibility in Miscanthus
… fields via clonal propagation. Plants grown from seed segregate widely, resulting in a decrease in plot yield. Further, seed established plots increase the invasive potential of this non-native genus of grasses. Both of these concerns could be alleviated by developing hybrid seed from inbred …
-
The impacts of research on Philippine rice production
… inputs such as irrigation, adoption of hybrid and third generation modern inbred varieties, attendance at rice production training sessions, use of high quality seed, and machine ownership were the main sources of production growth in these periods. Using a cost framework, I measured the …
-
Evaluation of additive and nonadditive genetic variation in elite maize germplasm for root, shoot, and ear characteristics
For the hybrid seed corn industry, corn breeding and research in the public sector ideally would serve the role of identifying novel genes, alleles, and breeding procedures that have promising commercial applications. However, despite increasing research on public germplasm improvement, the role is …