Characterization of Some Germplasms on Physiology, Yield and Quality of Greater Yam (Dioscorea alata L.)
College of Agriculture, Central Agricultural University, Impha, Manipur (India)-795004, India
ABSTRACT
A field experiment was conducted in the Horticulture Research Farm, Andro, Imphal East during 2014 – 2015. The treatments consisted of IGDa-4, IGDa-2, NAUDa-2, Da199, Da-11, Da-25 and local cultivar as check. The physiological parameters at 135 days after planting viz., leaf area index (2.83), harvest index (76.37%) and crop growth rate (3.10 g day-1 ) were highest in Local cultivar. Da-25 was highest in net assimilation rate (0.007 g-2 day-1 ) and relative growth rate (0.0078 g-1 day-1 ). Length of the tuber (27.40 cm), single tuber weight (1228.77 g and tuber weight per plant (1228.77 g) and tuber yield (15.17 tha-1 ) were highest in Local cultivar, while diameter of the tuber (12.13 cm) and number of tubers per plant (1.67) were highest in Da-11 and Da-199, respectively. Highest dry matter percentage (34%) and starch (21.67%) content were in Da-11 and IGDa-2, respectively
