Effect of hydration treatment on germination and yield components in F₃ generation of black and yellow seeded soybean (Glycine max (L.) Merrill.)

SUNEETA  PANDEY, PUSHPENDRA, B.V.SINGH, KAMENDRA SINGH and M.K.GUPTA

Department of Genetics and Plant Breeding,

College of Agriculture,

G. B. Pant University of Agriculture and Technology,

Pantnagar-263145 (U. S. Nagar, Uttarakhand)

ABSTRACT

 Fifty-nine F₃ individual plants derived from the cross of Birsa Soy-1/JS-71-05 were evaluated for amount of water absorption and hard seededness through hydration treatment. Highest amount of water absorption (67.0 mg/20 seeds) was recorded for GTP-27 (genotype-27) whereas lowest amount of water absorption was reported for GTP-61A (9.70 mg). In general, those genotypes, which were recorded for high amount of water absorption, exhibited high germination percentage (74.5- 94.0 %). Water absorption showed highly significant positive correlation with germination percentage. The primary yield components viz., number of pods per plant, dry matter weight per plant, 100-seed weight and harvest index were positively associated with each other. Highest estimate for broad sense heritability was observed for 100-seed weight (0.857), followed by germination percentage (0.840), water absorption (0.822) and dry matter weight per plant (0.812), respectively.  High value of expected genetic advance was observed for germination percentage (46.30), followed by water absorption (23.04), pods per plant (22.27), dry matter weight per plant (15.19), respectively.