Response of Soybean Lines to Drought Stress During Reproductive Phase

DOI

10.2991/absr.k.210621.055How to use a DOI?

Keywords

drought tolerant, reproductive phase, seed yield, soybean

Abstract

At production centers, soybeans are in a rice-paddy-soybean or paddy-soybean cropping pattern, which is often at risk of crop failure due to drought. Therefore, it is necessary to develop varieties that are more tolerant to drought than existing varieties. The aim of this study was to evaluate soybean lines to drought stress during the reproductive phase. The research was conducted at Ngawi, East Java during dry season of 2016. A total of 34 soybean lines and two check varieties (Grobogan and Dering 1) were tested using a randomized block design and repeated three times. The study consisted of two growing environments, namely optimal conditions (irrigation between planting and R7 phase at intervals of 10-15 days) and drought conditions in the reproductive phase (irrigation was carried out between planting and R2 at intervals of 10-15 days). Drought stress tolerance lines were identified based on their stress tolerance indexes (STI). Research result revealed that five soybean lines were more tolerant than Dering 1 (drought tolerant check), with a stress tolerance index (STI) values of 1.20 to 1.35, which was higher than Dering 1 (STI 1.02) and Grobogan (STI 1.04). Among those five lines, TGm-161-25-10 line, produced the highest seed yield both in the optimal and drought conditions, i.e. 2.60 t / ha and 2.44 t/ha, respectively. Those five selected drought-tolerant lines were early maturing with maturity days ranged from 75.0 to 77.3 days and three of those were belong to large seed sizes, i.e. 14.6-15.4 g/100 seeds.

Copyright

© 2021, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Suhartina
AU  - Purwantoro
AU  - Novita Nugrahaeni
AU  - Made Jana Mejaya
PY  - 2021
DA  - 2021/06/23
TI  - Response of Soybean Lines to Drought Stress During Reproductive Phase
BT  - Proceedings of the 3rd KOBI Congress, International and National Conferences (KOBICINC 2020)
PB  - Atlantis Press
SP  - 324
EP  - 329
SN  - 2468-5747
UR  - https://doi.org/10.2991/absr.k.210621.055
DO  - 10.2991/absr.k.210621.055
ID  - 2021
ER  -