|Author:||Vyas, S. P. ; Garg, B. K. ; Kathju, S. ; Lahiri, A. N.|
|Book Group Author:||NA|
Early flowering (RMO-40, RMO-117, RMO-224, RMO-225 and RMO-257) and late flowering (Jadia, FMO-1023-1, FMO-1096-1, Jawala, JMM-DBS-1, FMO-1118-1, IPCMO-880, FMO-1460-1 and JMM-259) genotypes of moth bean (Vigna aconitifolia) were evaluated for relative drought tolerance under field drought situation in Jodhpur, Rajasthan, India, during low rainfall year in 1991. Soil moisture extraction pattern revealed that early flowering genotypes utilized 15.9% less water during vegetative growth compared to late flowering genotypes. The moisture left in the soil was efficiently utilized during the reproductive growth by early genotypes. Consequently, the early flowering genotypes produced higher seed yield compared to late flowering genotypes. This was attributed to more efficient partitioning of photosynthates by early genotypes compared to late flowering genotypes. Observations on plant water status, N, P and K concentrations, as well as on water use efficiency and N use efficiency, also showed the superiority of early genotypes over late genotypes under drought conditions.
chemical composition, crop yield, cultivars, drought,drought resistance, earliness, flowering date, mineral content, nitrogencontent, nutrient content, phosphorus, photosynthates, plantcomposition, plant water relations, potassium, soil water, waterpotential, water stress, water use efficiency, India, Rajasthan, Vignaaconitifolia, Vigna, Papilionoideae, Fabaceae, Fabales, dicotyledons,angiosperms, Spermatophyta, plants, eukaryotes, South Asia, Asia,Developing Countries, Commonwealth of Nations, India, chemicalconstituents of plants, cultivated varieties, drought tolerance, soilmoisture, Field Crops (FF005) (New March 2000), Plant Breeding andGenetics (FF020), Plant Physiology and Biochemistry (FF060), Plant WaterRelations (FF062), Environmental Tolerance of Plants (FF900), SoilPhysics (JJ300)