Md Shahin Uz Zaman, Md Mahamudul Hasan, Lutfun Nahar Luna, Md Shahin Iqbal, Al Imran Malik, Md. Amir Hossain
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Abstract
Background and aims
Pulses- grain legumes are vulnerable to waterlogging (WL) in South Asia. This study examined the effects of WL on two pulses at germination and reproductive stages and tested hypotheses: Mungbean (Vigna radiata L.) and blackgram (Vigna mungo L.) differ in WL tolerance; and the differences are due to phenotypic and growth traits.
Methods
Three mungbean and one blackgram cultivar were grown in pot-soil system. The treatments were at germination stage, 0 (drained control), 3, 5 and 7 d WL, while at the reproductive stage 0 (drained control), 3, 6 and 9 d WL and then drained to allow recovery (RE).
Results
Seed emergence decreased with longer WL duration. Blackgram cultivar showed 38% emergence, while mungbean cultivars had 14–18% after 7 d of WL. At the reproductive stage, WL reduced shoot and root growth compared to drained control. After 30 d of recovery, the chlorophyll concentration of first trifoliate leaves increased by 15% in blackgram cultivar, while it decreased in mungbean cultivars compared to their drained controls. Blackgram had higher relative growth rate (RGR) than mungbean at 9 d WL. After 9 d of WL, blackgram seed yield was reduced by 40% and mungbean cultivars by 52–60% compared to drained controls.
Conclusions
This study has provided evidence of a difference in WL tolerance between two summer pulses at both stages for the particular soil used here. Seedling emergence, RGR and yield attributed the variation. These new findings will allow growers to select suitable crops for different cropping systems.
期刊介绍：
Plant and Soil publishes original papers and review articles exploring the interface of plant biology and soil sciences, and that enhance our mechanistic understanding of plant-soil interactions. We focus on the interface of plant biology and soil sciences, and seek those manuscripts with a strong mechanistic component which develop and test hypotheses aimed at understanding underlying mechanisms of plant-soil interactions. Manuscripts can include both fundamental and applied aspects of mineral nutrition, plant water relations, symbiotic and pathogenic plant-microbe interactions, root anatomy and morphology, soil biology, ecology, agrochemistry and agrophysics, as long as they are hypothesis-driven and enhance our mechanistic understanding. Articles including a major molecular or modelling component also fall within the scope of the journal. All contributions appear in the English language, with consistent spelling, using either American or British English.
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