10 research outputs found
Somaclonal variation in rice â Submergence tolerance and other agronomic characters
The ability to withstand complete submergence was studied in R seedlings raised by selfâpollination from 158 R plants regenerated from callus of mature rice seeds (cultivars FR13A and Calrose). Compared to parental controls, significant improvement in submergence tolerance as assessed by percentage survival, number of new leaves and chlorophyll content of the third leaf, was found in 5 of the 115 cv. FR13A somaclones and 3 of the 43 cv. Calrose somaclones tested using an aquarium system in a controlledâtemperature glasshouse. With some exceptions these improvements were also observed in the R generation when tested under field conditions in Thailand. Variation in other agronomically important characters was observed in the R plants grown in a temperature glasshouse under 2 contrasting environments. Copyrigh
Agricultural productivity in the lower Mekong Basin: trends and future prospects for food security
Agricultural productivity, Economic productivity, Mekong Basin, Food security,