Study on the Pattern of Seed Germination of Various Subspecies Cum Provenances of <I>Acacia nilotica</I> Willd. Ex. Del. Under Nursery Conditions

Abstract

Seed germination pattern of 30 provenances belonging to 5 subspecies of A. nilotica namely tomentosa, indica var. jaquemontii, indica var. cuppressiformis, nilotica, and indica from 5 countries namely India, Sudan, Pakistan, Yemen and Senegal were studied in nursery conditions. Provenances of A. nilotica from Pakistan showed a very good performance and depicted a parabolic (asymptotic) type of germination curve. However subsp. indica var. cuppressiformis from Pune (Maharashtra, India) gave maximum percentage of seed germination (75%). Significantly a good correlation was evident between cumulative seed germination&number of days elapsed. Relative delay in the initiation of seed germination was found maximum in provenances of subsp. tomentosa and subsp. nilotica