Pandey Nalini, Gupta Bhavana, Pathak Girish Chandra
Plant Nutrition and Stress Physiology Laboratory, Department of Botany, University of Lucknow, Lucknow 226 007, India.
Indian J Exp Biol. 2013 Jul;51(7):548-55.
Black gram plants subjected to varying levels of Zn supply (0.01 to 10 microM Zn) showed optimum growth and dry matter yield in plants receiving 1 microM Zn. The dry matter yield of plants decreased in plants receiving 0.01 and 0.1 microM Zn (deficient) and excess levels of Zn (2 and 10 microM Zn). The plants grown with Zn deficient supply showed delayed flowering, premature bud abscission, reduced size of anthers, pollen producing capacity, pollen viability and stigma receptivity resulting in poor pod formation and seed yield. Providing Zn as a foliar spray at pre-flowering stage minimized the severity of Zn deficiency on reproductive structure development and enhanced the seed nutritional status by enhancing seed Zn density, seed carbohydrate (sugar and starch content) and storage proteins (albumins, globulins, glutenins, and prolamines).
将黑豆植株置于不同锌供应水平（0.01至10微摩尔锌）下，结果显示，接受1微摩尔锌供应的植株生长最佳，干物质产量最高。接受0.01和0.1微摩尔锌（锌缺乏）以及过量锌（2和10微摩尔锌）供应的植株，其干物质产量下降。在锌供应不足条件下生长的植株表现出开花延迟、花蕾过早脱落、花药尺寸减小、花粉产生能力降低、花粉活力和柱头接受能力下降，从而导致结荚不良和种子产量降低。在开花前期进行叶面喷施锌可将锌缺乏对生殖结构发育的影响降至最低，并通过提高种子锌密度、种子碳水化合物（糖和淀粉含量）以及贮藏蛋白（清蛋白、球蛋白、谷蛋白和醇溶蛋白）来改善种子营养状况。
