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Morphological responses of pulse (Vigna spp.) crops to soil water deficit

DOI: 10.2298/jas1201031b

Keywords: black gram , green gram , moisture stress , physiological parameters , yield responses

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Abstract:

The present experiment was conducted with two common pulse crops namely black gram (Vigna mungo L.) and green gram (Vigna radiata L.) with the objective to study the morpho-physiological changes that took place in response to low moisture stress. Parameters such as plant height, leaf number, leaf area and pod number were studied under moisture stress condition as well as subsequent recovery stages. At harvest, yields of these two crops were recorded and various yield indexes like drought susceptibility index, drought tolerance index, mean and productivity rate were calculated. The study revealed that moisture stress has a significant impact on all these parameters in both crops. The effect was more significant in green gram compared to black gram. From the findings it is observed that moisture stress during flowering stage is detrimental for yield of the pulse crops and re-watering does not have a significant impact on yield improvement. Black gram variety T9 and green gram variety Pratap were identified as drought-tolerant varieties.

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