Evaluation of salt tolerance of some varieties of Capsicum species during germination using morphometric features
Chisom F Iroka, Maureen O Chukwuma, Alex I Izundu, Nkumah C Okereke
Evaluation of salt tolerance on morphometric features of some pepper species in their germination stage was carried out using a completely randomized design with four replications. Data were analysed using analysis of variance (ANOVA) and compared with duncan multiple range test (DMRT). Morphometric features studied include; rate of germination, germination percentage, root length, shoot length, root ratio, shoot ratio and dry weight of plantlet. Sodium chloride was used for salinity treatments. Salinity stress with slow decline in germination of plants was observed in bell pepper, bird pepper and sweet pepper, thus the salinity was 12 ds/m-1 and germination percentage was high in the three plants. Germination rate under salt stress linearly decreased in all plants. The germination rate compared to germination percentage in plants assessment showed greater sensitivity to salt stress. The results showed that the germination stage of bell pepper and bird pepper were tolerant to salinity, sweet pepper was moderately resistant to salinity and cayenne pepper was highly sensitive to salt. The results of data analyses showed salinity effect on studied varieties and interaction of pepper varieties to salinity on the studied characters were significant at 1% level. Also some characters as rate and percentage of germination, root and shoot length, root to shoot ratio and dry weight of plantlet with increasing salinity in four pepper varieties decreased.