Effect of Different Nitrogen Levels on Biochemical Parameters of Rice Genotypes (Oryza sativa L.)

Vinita Zhodape, D. Khokhar, A. Guhey, P. Katiyar
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Abstract

Field experiment was conducted during 2016-17 and 2017-18 to study the response of rice genotypes on Growth and morpho-physiological parameters under three nitrogen levels 120 kg N ha-1, 80 kg N ha-1 and 40 kg N ha-1 as main treatments and twenty rice genotypes as sub treatments, which was carried out at experimental site of Department of Plant Physiology, IGKV, Raipur (C.G.) with Split plot design along with two replications. In the present investigation among the nitrogen treatments, application of 120 kg N ha-1 recorded significantly higher values for growth and morpho-physiological parameters such as plant height, number of tillers/plant, number of effective tillers/ plant, number of panicle/m2, panicle length, flag leaf area, specific leaf area and specific leaf weight. Among the genotypes, DXD (124)-17-193 followed by DXD (124)-17-192 and DXD (124)-3-28 recorded the maximum grain yield even under all the treatments, which also gives better result on the other growth and morpho-physiological parameters. This indicated that maximum yield can be attributed to maximum number of panicles, more photosynthetic rate, more tillers and effective tillers, more flag leaf area, maximum specific leaf weight and minimum specific leaf area.
不同施氮水平对水稻基因型生化参数的影响
本试验于2016-17年和2017-18年在赖布尔省IGKV植物生理研究所试验点采用2个重复的分割小区设计,研究了不同水稻基因型在120 kg N ha-1、80 kg N ha-1和40 kg N ha-1 3个氮肥水平下对水稻生长和形态生理参数的响应。在本研究中,施用120 kg N hm -1显著提高了植株的生长和形态生理参数,如株高、分蘖数、有效分蘖数、穗数/m2、穗长、旗叶面积、比叶面积和比叶重。各基因型中,DXD(124)-17-193、DXD(124)-17-192和DXD(124)-3-28在各处理下均取得最大产量,在其他生长和形态生理参数上也有较好的表现。这表明,最高产量可归因于最大穗数、更高的光合速率、更多的分蘖和有效分蘖、更大的旗叶面积、最大比叶重和最小比叶面积。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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