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 8 of 8 for “"Hybrid rice"”.
-
The Potential Environmental Benefits of Hybrid Rice Varieties
… on greenhouse gas (GHG) emissions, Arkansas rice producers may need to undergo some changes in regards to rice cultivar selection. The purpose of this study is to estimate the environmental benefits of cultivating hybrid rice varieties as opposed to conventional and Clearfield rice varieties. …
-
The Impact of Herbicide-Resistant Rice and Hybrid Rice Technology on Weedy Rice Evolution
<p>Weedy rice (Oryza sativa L.) competes aggressively with rice, reducing yields and grain quality. ClearfieldTM rice, is nontransgenic herbicide-resistant (HR) rice introduced in 2002 to control weedy rice, has resulted in ALS-resistant weedy rice due to gene flow. Volunteers of ClearfieldTM rice …
-
Characterization of Genetic Sources Associated with Restorability and Seed Dimension in Arkansas Restorer Rice Lines
<p>Hybrid rice (Oryza sativa L.) breeding offers a significant opportunity to enhance rice production, and the cultivation of a male sterile line is the most important factor in the success of cross-breeding. One of the key elements of hybrid rice production is to develop a restorer line that is …
-
The dynamics of Vietnam agriculture under changing conditions
… availability of farmland areas, improvements in rice technology are vital for Vietnam to maintain food security and export status. Despite the rising application of high-yielding varieties, rice productivity growth slowed down. The sustainable development of Vietnam agriculture is facing …
-
The impacts of research on Philippine rice production
… of research and development in Philippine rice production. I examined the sources of rice production growth in the Philippines from 1996 to 2007 by estimating a translog production function using a generalized instrumental variable estimator. Using a production framework, I analyzed the …
-
Unlocking the genetic diversity of the undomesticated rice relative Oryza longistaminata
Rice (Oryza sativa) is a crucial part of the global food supply. Meeting projected increases in demand, which are rising fastest in sub-Saharan Africa, while using resources efficiently and adapting to a changing climate will require new sources of variation for trait improvement. The genetically …
-
Methane Emissions and Ammonia Volatilization from Drill-Seeded, Delayed-Flood Rice on a Silt-Loam Soil in Arkansas
… factor of 160 kg CH4-C ha-1 for a primary rice (Oryza sativa L.) crop. The emissions factor is based on studies that do not adequately represent current management practices in Arkansas. Another concern is pre-flood fertilizer nitrogen (N) management, as the common N source, urea, is prone …
-
Three studies in marker-assisted plant breeding
… maize cultivars. Second, we phenotype F1 rice hybrids of existing male-sterile lines at the International Rice Research Institute and highly stress-tolerant male lines used in development of Green Super Rice varieties. We select the F1 hybrids for yield performance and their parents with …