INTERRELATIONSHIP AND PATH ANALYSIS FOR SEED YIELD AND ITS COMPONENT CHARACTERS UNDER EIGHT ENVIRONMENTS IN PEA (PISUM SATIVUM L.)

A study was conducted to determine the character associations and their mode of direct and indirect effect on grain yield in 30 genotypes of pea to pick up the best character contribution under irrigated and rainfed environments. The value of genotypic correlations was higher than phenotypic correlations for all the characters in all the environments. Number of pods per plant exhibited significant and positive association with seed yield per plant in all the environments. Seed yield was significantly and positively associated with protein content at genotypic level in E5. Protein content exhibited negative and significant correlation with pod length and number of nodules in E2 and E4 and with number of seed and 100 seed weight in E6. The plant height had the positive values of direct effects from 0.104 to 0.008 in E3 and E2, respectively. The direct effect of number of seeds per plant on grain yield was observed to be low and positive under E7 and E8 and negative under El, E2, E3, E4, E5 and E6. The characters like biological yield at phenotypic level had positive correlation with seed yield and its direct effect was positive would be attributed by the direct effects of others yield contributing characters.