Evaluating the Response of Nitrogen Application on Growth, Development and Yield of Quinoa Genotypes
Evaluating the Response of Nitrogen Application on Growth, Development and Yield of Quinoa Genotypes
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评估施氮对藜麦基因型生长、发育和产量的影响
DOI：
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发表时间：
2014
影响因子：
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通讯作者：
I. Afzal
中科院分区：
文献类型：
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作者：
S. Basra;S. Iqbal;I. Afzal
藜（Chenopodium quinoa Willd.）一种假谷物，是巴基斯坦的新品种作物是非生物胁迫耐受性，低投入要求和经济生产是谷物的上级营养概况相比，普通谷物。其生产技术还有待因地制宜地探索。为了获得高的作物产量，均衡的养分量是基本要求。为了评价不同氮素水平对藜麦生产力的影响，对两个有希望的基因型A9和CPJ-2进行了田间试验，设5个氮素水平（0、50、75、100、125 kg ha-1），分两批进行。施氮（75 kg N ha-1及更高的N水平）导致营养物候期提前完成。基因型CPJ 2比基因型A9早熟。土壤施氮（75 kg N ha-1及更高水平）改善了所有生长和产量相关性状，从而增加了生物产量、经济收获和收获指数。与对照相比，施氮量对籽粒产量的增加也有影响。A9基因型产量高于CPJ-2。此外，土壤氮补充（75公斤N ha-1和更高的N水平）提高叶片叶绿素含量的两种藜麦基因型。因此，土壤施氮量为75 kg N ha-1时，藜麦获得最大经济产量的最佳施氮水平。2014年12月24日-Friends Science Publishers
Quinoa (Chenopodium quinoa Willd.), a pseudocereal, is a new introduction in Pakistan. Crop is abiotic stress tolerant, low input requiring and economic produce is grain of superior nutritional profile as compared to common cereals. Its production technology has yet to be explored according to local conditions. For obtaining high crop yields nutrient in balanced amount is a basic requirement. To evaluate the influence of different nitrogen doses on the productivity of quinoa, a field experiment was conducted on two promising genotypes A9 and CPJ-2 with five nitrogen levels (0, 50, 75, 100, 125 kg ha -1 ) in two splits. Nitrogen fertilization (75 kg N ha -1 and higher N levels) caused early completion of vegetative phenological stages. Genotype CPJ2 was early maturing as compared to genotype A9. Soil application of nitrogen (75 kg N ha -1 and higher N levels) improved all growth and yield related traits resulting in increased biomass production, economic harvest and harvest index. Percent increase in grain yield over control was also affected by nitrogen application. Comparatively genotype A9 was high yielding than CPJ-2. Furthermore, N supplementation of soil (75 kg N ha -1 and higher N levels) improved leaf chlorophyll content of both quinoa genotypes. In conclusion, soil application with N @ 75 kg N ha -1 was found best level of N to attain maximum economic harvest of quinoa. © 2014 Friends Science Publishers