Abstract
Genetic variability in seed characters of 18 seed sources of Mesquite (Prosopis juliflora (Sw.) DC.) was studied. Mean squares differed significantly for all the characters. High variability was observed almost in all the seed characters. Heritability was high for all the characters except tetrazolium test, while high genetic advance was observed for dehydrogenase activity, germination percentage, root length, seedling length, vigour index-I and vigour index-II. Hundred seed weight was found to be positively correlated with the other remaining characters individually.
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