首页> 外文期刊>Journal of Plant Nutrition >DIFFERENTIAL RESPONSES OF YIELD AND SELECTED NUTRITIONAL COMPOSITIONS TO DROUGHT STRESS IN SUMMER MAIZE GRAINS
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DIFFERENTIAL RESPONSES OF YIELD AND SELECTED NUTRITIONAL COMPOSITIONS TO DROUGHT STRESS IN SUMMER MAIZE GRAINS

机译:夏玉米籽粒产量和部分营养成分对干旱胁迫的响应

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摘要

Water is a key factor influencing the yield and quality of crops. Thus, a field simulative study was carried out from 2002 to 2003 in order to assess yield and nutritional composition changes in maize (Zea mays L.) grains at three different soil moisture levels: full-watered (FW), moderately stressed (MS), and severely stressed (SS). Our data indicated that SS treatment significantly increased nitrogen (N), calcium (Ca), magnesium (Mg), copper (Cu), and zinc (Zn) contents in maize grains by 11.9%, 27.8%, 11.1%, 18.4%, and 32.9%, respectively, when compared to FW. However, significant decreases (P 0.05) in starch, phosphorus (P), and potassium (K) contents and yields in maize grains, about 27.9%, 16.5%, 16.7%, and 375.2%, respectively, were seen at SS treatment as compared to those in the FW treatment. In contrast, crude fat content had a different pattern in response to drought stress as compared to most nutritional compositions in maize grains. It generally followed the series MS FW SS. These results suggested that although some nutritional compositions in maize grains were positively affected by drought stress, the yields decreased significantly.
机译:水是影响农作物产量和质量的关键因素。因此,从2002年至2003年进行了田间模拟研究,以评估三种水分含量下的玉米(Zea mays L.)谷物的产量和营养成分变化:全水(FW),中度胁迫(MS) ,而且压力很大(SS)。我们的数据表明,SS处理显着提高了玉米籽粒中的氮(N),钙(Ca),镁(Mg),铜(Cu)和锌(Zn)的含量,分别提高了11.9%,27.8%,11.1%,18.4%,与FW相比分别为32.9%和32.9%。然而,在SS处理中,玉米籽粒中淀粉,磷(P)和钾(K)的含量和单产显着下降(P 0.05),分别约为27.9%,16.5%,16.7%和375.2%。与FW治疗中的相比。相反,与玉米籽粒中大多数营养成分相比,粗脂肪含量对干旱胁迫具有不同的模式。它通常遵循MS FW SS系列。这些结果表明,尽管玉米籽粒中的某些营养成分受到干旱胁迫的积极影响,但单产却明显下降。

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