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Salt tolerance of pigeon pea (Cajanus cajan (L.) Millsp.) at three growth stages
Author(s) -
ASHRAF M
Publication year - 1994
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1994.tb04123.x
Subject(s) - cajanus , biology , seedling , shoot , germination , proline , horticulture , botany , agronomy , amino acid , biochemistry
Summary Salt tolerance of pigeon pea ( Cajanus cajan (L.) Millsp.) was determined at three growth stages following observations by a number of workers that degree of salt tolerance of different crops varies with their ontogeny. The salt tolerance of three accessions, Local arhar, ICPL‐151 and ICPL‐850014 of pigeon pea was assessed at the germination, seedling and adult stages. There was no positive correlation between tolerance at the early growth stages and at the adult stage since no clear difference in salt tolerance of the three accessions was observed at the germination and the seedling stages, whereas accessions differed considerably at the adult stage. Although increasing salt concentrations adversely affected the growth of all three accessions, ICPL‐151 was superior to the other two accessions in fresh and dry biomass, yield and yield components when tested at the adult stage. The tolerant accession, ICPL 151, accumulated significantly lower Na + and CI in shoots. By contrast it was higher in shoot and root K + , K/Na ratios, K vs Na selectivity, soluble sugars, free amino acids and proline compared with the other two accessions.