Distribution of seed protein fractions and amino acids in different anatomical parts of chickpea ( Cicer arietinum L.) and pigeonpea ( Cajanus cajan L.) uri icon

abstract

  • Studies on protein fractionation in seed coat, embryo, cotyledons and wholeseed were made to observe th e differences, if any, between chickpea and pigeonpea.Results indicated th a t globulin was the major fraction o f embryo and cotyledons o f theselegumes. Seed-coat nitrogen was observed to be mostly comprised o f nonprotein nitrogenand glutelin fractions and thus differed from other components in both chickpea andpigeonpea. The albumin fraction o f cotyledons o f both crops had the highest concentrationo f sulphur amino acids, methionine and cystine. Glutelin contained a considerablyhigher concentration o f methionine and cystine than did globulin in chickpea and pigeonpea.This suggests th a t lines with higher glutelin should be identified to improve theirprotein quality. The amino acid compositions o f different seed components did notshow large differences between these two pulse crops

publication date

  • 1982
  • 1982