Abstract
Bean is an important vegetable crop of Nepal but farmers of Jumla district of Nepal are experiencing low productivity, probably due to poor germination. Keeping these points in view, a study was conducted to determine the germination and seed vigour of various indigenous beans genotype of Jumla district during February to March, 2018. The promising lines of Jumli beans namely KBL-3, KBL-2, PB0002, PB0001, KBL-1 and farm saved KBL-3 were used under study. The experiment was laid in completely randomized design (CRD) with four replications and six treatments namely T1 = KBL-3, T2 = KBL-2, T3 = PB0002, T4 = PB0001, T5 = KBL-1 and T6 = Farm-saved KBL-3. Significant differences were observed in germination percentage, speed of germination, seed vigourindex and true leaf emergence among different lines of Jumli beans .The highest germination percentage (96%), seed vigour index (1367) and speed of germination (1.763) was found in the variety of KBL-3 whereas the lowest germination percentage (69%), seed vigour index (947) and speed of germination (0.968) were found in the variety of KBL-1. Days to true leaf emergence was found shortest in the KBL-3 (23.50) and longest in the farm saved KBL-3 (30.25). KBL-3 pureline of Jumli bean was found to be highly responsive to seed germination and vigour characteristics. Thus, it would be better to suggest the indigenous bean growing farmers of Jumla district to cultivate KBL-3 for better germination and seed vigour.
 SAARC J. Agri., 18(2): 67-75 (2020)
Highlights
Bean (Phaseolus vulgaris, Fabaceae) is an indigenous pulse and a cash crop of Jumla and Karnali Zone; mostly cultivated after rice, maize, wheat, barley and millet (Bhujel et al, 2012)
In Nepal, local landraces have been named as KBL (Karnali Bean Lines) and numbers are given as KBL-1, KBL-2 and they are grouped on the basis of their colors (ARS, 2011)
Varietal response of Jumli beans (Phaseolus vulgaris) to seed germination and seed vigour was conducted under High-Tech nursery, Shree Kalika Falful Nursery of Chandannath Municipality- 9, Jumla during February to March, 2018
Summary
Bean (Phaseolus vulgaris, Fabaceae) is an indigenous pulse and a cash crop of Jumla and Karnali Zone; mostly cultivated (in terms of area) after rice, maize, wheat, barley and millet (Bhujel et al, 2012). These genotypes are being used in several ways as dal (dry split pulses), dry bean, green pod vegetable, bean flour and a medicinal crop (Neuapne et al, 2004). Most of the farmers use harvested crop as a source of seed for session crop without maintaining proper management and quality Such seeds are not stored in appropriate environmental conditions and have low physical as well as genetic purity. There is no proper screening of lines of Jumli beans based on seed vigour Under such circumstances, the crop establishment and subsequent yield is largely affected, which is one of the reasons behind low production of beans in Jumla, compared to national average (MoALD, 2017). Keeping these points in view, a study was conducted for comparative study of germination and seed vigour of different indigenous bean genotypes of Nepal
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