Published in Scientific Papers. Series A. Agronomy, Vol. LXVII, Issue 1
Written by Elena PETCU, Ancuța BĂRBIERU, Ioana Anca VLAD
Soybean is a very important crop due to its multiple uses, but hydric stress can substantially reduce soybean production. The response of soybean plants to drought and the compensation effect of growth after rehydration has been very little studied. In this context, this paper presents results regarding the response of some soybean genotypes to water stress and soil rehydration. Our goal being to identify genotypes that have a compensation mechanism in response to drought to support breeding for drought resistance and higher yields. Eight soybean genotypes were studied under greenhouse conditions. Water stress inhibited the growth of soybean plants. After rehydration, soybean plant height and leaf surface showed a rapid growth/recovery and produced good compensation compared to the root system where the compensation phenomenon was less. Water stress reduced the chlorophyll content and upon rehydration, different levels of compensation were observed in each studied genotype, there was even one genotype that showed an overcompensation.
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