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微胚乳玉米籽粒中淀粉积累规律的研究(英文) 总被引:1,自引:0,他引:1
[Objective] The experiment aimed to study laws of accumulation of starch in micro-endosperm maize kernel. [Method] The laws of accumulation of starch in maize embryo and OSK(the other section of a kernel except embryo) of MEM(micro-endosperm maize) were studied in this experiment by taking Gaoyou 115 maize as control. [Result] The starch accumulation speed of MEM embryo was slightly lower than that of Gaoyou115 and the starch accumulation speed of MEM OSK was far lower than that of Gaoyou 115, so the starch content of the whole kernel of Gaoyou 115 was 3.4 to 4.5 times as high as that of MEM during harvesting. The embryo starch weight ration of Gaoyou 115 maize during harvesting was only 3% to 4% while that of MEM was 16% to 22%. Moreover, starch accumulation speeds of different MEM materials were different and there were significant differences in starch content during harvesting among different MEM materials. [Conclusion] The starch accumulation in MEM was slow, and MEM has widely variation on starch accumulation. 相似文献
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2009年2月1日,国务院下发了《中共中央国务院关于2009年促进农业稳定发展农民持续增收的若干意见》,重点突出了农业发展和农民增收。为充分了解金融机构对农民增收的促进作用,笔者以甘肃民勤县为例, 相似文献
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基于冠层反射光谱的冬小麦干物质积累量的估测研究 总被引:2,自引:0,他引:2
[目的]分析了小麦光谱特征与干物质积累量的相关关系。[方法]通过对冬小麦不同品种的干物质积累量、叶面积等参数和冬小麦冠层光谱反射率、光谱一阶微分和光谱比值植被指数(RVI)的相关分析,确立了冬小麦干物质积累量的敏感波段,并建立了预测模型。[结果]开花期350~700 nm和1 420~1 520 nm冠层光谱反射率和灌浆期350~1 750 nm冠层光谱反射率分别与干物质积累量显著相关;比值植被指数RVI(560,1220)与干物质积累量的相关性较好;确立的冬小麦干物质积累量预测模型为:干物质积累量=-186.94×RVI(560,1220)-2 242.2(R2=0.713 8),说明通过遥感手段监测冬小麦的群体质量是可行的。[结论]该研究为高光谱遥感技术在监测小麦的群体质量的应用提供参考依据。 相似文献
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[目的]研究微胚乳玉米籽粒中淀粉积累规律。[方法]以高油115玉米作为对照,对微胚乳玉米胚和非胚部位中淀粉的积累规律进行研究。[结果]微胚乳玉米胚部位的淀粉积累速度稍低于高油115,非胚部位的淀粉积累速度则远低于高油115,收获时高油115的淀粉百分含量达微胚乳玉米的3.4—4.5倍。高油115收获时的胚淀粉重比只有3%-4%,而微胚乳玉米中胚淀粉重比可达16%-22%。此外,不同微胚乳玉米材料淀粉积累速度不尽一致,收获时不同微胚乳玉米材料的淀粉含量也具有较大差异。[结论]微胚乳玉米籽粒中淀粉积累缓慢。 相似文献
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