Efficacy of storage duration and pre-sowing treatments on seed germination, seedling growth and longevity of karonda (Carissa carandas)

摘要

Considering germination problem in karonda (Carissa carandas L.) the present experiment was carried out in factorial randomized block design with 3 stages of seed storage condition and 12 levels of pre-sowing treatments coupled with 36 treatment combinations. Investigation revealed that freshly shown seeds were superior in respect of germination percentage (64.12%), fresh and dry shoot weight and root weight, seedling vigour index (1411.72) and root-shoot ratio (0.27) also. In case of several pre-sowing treatments, P-8 (KNO3 ) gave the maximum germination percentage (55.37%), seedling vigour index (1148.49) with minimum time taken for germination (11.74). The interaction between different storage duration and pre-sowing treatments was statistically significant with respect to germination percentage of Karonda. Among different treatment combination, T-8 (D1P8 ) recorded best in respect minimum time taken for germination (8.20) and other morphological parameters whereas T-36 gave the lowest results in all the parameters observed.