The ridge furrow cropping technique indirectly improves seed filling endogenous hormonal changes and winter wheat production under simulated rainfall conditions
The ridge furrow cropping technique indirectly improves seed filling endogenous hormonal changes and winter wheat production under simulated rainfall conditions
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DOI：
10.1016/j.agwat.2018.03.031
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发表时间：
2018-05
影响因子：
6.7
通讯作者：
Shahzad Ali;Yueyue Xu;I. Ahmad;Qianmin Jia;Hu Fangyuan;Ihsanullah Daur;Ting Wei;T. Cai;X. Ren;Peng Zhang;Z. Jia
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文献类型：
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作者：
Shahzad Ali;Yueyue Xu;I. Ahmad;Qianmin Jia;Hu Fangyuan;Ihsanullah Daur;Ting Wei;T. Cai;X. Ren;Peng Zhang;Z. Jia
研究了模拟降雨浓度条件下垄沟雨水收集技术对冬小麦有限灌种的影响及其与激素变化的相关性。在2015-2017年的试验年，将RF系统与传统的平面种植（TF）进行了比较，在三种模拟降水浓度（1:275,2,200,3,125 mm）下，采用两种有限灌溉水平（150,75 mm）。结果表明，在125 mm降雨条件下，rf150处理显著提高了水稻基部和上部种子的灌浆率。200 mm降水的rf150处理也显著提高了单粒重和基部和上部种子的灌浆率。而275 mm降水的灌水系统对灌浆率和籽粒质量均无显著影响。在125和200 mm模拟降雨量下，RF体系中吲哚-3-乙酸（IAA）和(Z)玉米素 + （ZR）玉米素核苷含量增加。在150 mm有限灌溉条件下，RF系统显示基部和上部种子ABA脱落酸和赤霉素酸（GAs）减少。在275 mm灌水条件下，RF系统对基上种子IAA、Z + ZR、ABA和GA含量均无显著影响。种子中的IAA、Z + ZR、ABA和GAs与最大、平均结实率和最大粒重呈显著正相关。结果表明，rf2150处理显著提高了土壤含水量和土壤呼吸速率，从而调节小麦灌浆速率，引起激素变化。这些波动显著影响了半干旱区冬小麦生产的农艺性状。
We sought to study the effects of the ridge furrow (RF) rainwater collecting technique on winter wheat seed filling with limited irrigation under simulated rainfall concentrations and its correlation with hormonal changes. The RF system was compared to traditional flat planting (TF) with two limited irrigation levels (150, 75 mm) under three simulated precipitation concentrations (1: 275, 2: 200, 3: 125 mm) during 2015–2017 experimental years. The results indicated that the RF150treatment with 125 mm rainfall, a significantly improved seed filling rate was observed in the basal and upper seeds. The RF150treatment with 200 mm precipitation also significantly improved the single seed weight and seed filling rate in the basal and upper seeds. In contrast, the RF system with 275 mm precipitation showed no significant influence on the seed filling rates and seed weight of basal and upper seeds under either limited irrigation level. The RF system at 125 and 200 mm simulated rainfall level exhibited increased (IAA) indole-3-acetic acid and (Z) zeatin + (ZR) zeatin riboside contents. The RF system under 150 mm limited irrigation showed decreased (ABA) abscisic acid and gibberellic acid (GAs) in the basal and upper seeds. The RF system with 275 mm precipitation had no significant influence on the IAA, Z + ZR, ABA and GA contents in the basal and upper seeds under either limited irrigation levels. The IAA, Z + ZR, ABA and GAs in the seeds s were positively correlated with the maximum and mean seed-filling rate and the maximum seed weight. Our results demonstrate that the RF2150treatment significantly improved the soil water contents and soil respiration rate, thereby regulating the wheat seed filling rate and creating hormonal changes. These fluctuations significantly affected the agronomic properties of winter wheat production in semi-arid regions.