Open AccessCowpea genotypes responses to salinity stress
Author(s) -
. Trustinah,
Novita Nugrahaeni
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/743/1/012036
Subject(s) - point of delivery , salinity , abiotic component , soil salinity , completely randomized design , horticulture , biology , abiotic stress , randomized block design , agronomy , ecology , biochemistry , gene
Growth and yield of copea can be affected by abiotic stress such as salinity. Aim of this study was to analyze the tollerant level of cowpea againts salinity. The study was conducted in the screenhouse of Iletri at Malang, East Java during the dry season of 2017. This study conduct using factorial completely randomized design with two replications. The first factor was two environments (non salt stress and salt stress with soil electrical conductivity 9.5 dS m -1 ). The second factor was 125 cowpea genotypes. Data measurement included plant height, number of branches, number of nodes, pod number, pod length, number of seeds per pods, and seed weight. The soil used in the trial was highly saline, and the stress intensity were ranged from 0.25 to 0.88 for all the observed characters. The genotypes responded variedly to salt stress, and there were a very significant effect on all the characters except the number of nodes. Seed yield and pod number per plant experienced the highest stress level with stress intensity above 0.80. Based on seed yield and the tolerance index, six genotypes were tolerant to the high salinity. The six genotypes were MLG 17019, MLG 17055, MLG 17060, MLG 17186, KT 4, and KT 6. Selected genotypes were prospective for development in the improvement of cowpea varieties tolerance to salinity.