新疆农业科学 ›› 2023, Vol. 60 ›› Issue (2): 336-343.DOI: 10.6048/j.issn.1001-4330.2023.02.010
• 作物遗传育种·耕作栽培·种质资源·生理生化 • 上一篇 下一篇
张永强1,2(), 方辉2, 陈传信1,2, 聂石辉1,2, 赛力汗·赛1,2, 徐其江1,2, 陈兴武1,2, 雷钧杰1,2()
收稿日期:
2022-05-17
出版日期:
2023-02-20
发布日期:
2023-03-31
通信作者:
雷钧杰(1973-),男,研究员,博士,研究方向为小麦高产栽培生理,(E-mail)leijunjie@sohu.com.
作者简介:
张永强(1988-),男,副研究员,研究方向为作物高产栽培生理,(E-mail)zyq988@yeah.net
基金资助:
ZHANG Yongqiang1,2(), FANG Hui2, CHEN Chuanxin1,2, NIE Shihui1,2, Sailihan Sai1,2, XU Qijiang1,2, CHEN Xingwu1,2, LEI Junjie1,2()
Received:
2022-05-17
Online:
2023-02-20
Published:
2023-03-31
Correspondence author:
LEI Junjie(1973-), male, researcher. research area: crop yield cultivation, (E-mail)leijunjie@sohu.com
Supported by:
摘要:
【目的】 研究外源硅滴施对弱光胁迫下冬小麦生长及生理特性的影响。【方法】 于2018~2019年在新疆南疆采用盆栽试验进行,以新冬60号为材料,自冬小麦拔节期至成熟期,用黑色遮阳网进行25%遮阴处理,在冬小麦拔节期设置5个外源硅(Na2SiO3分析纯)滴施量分别为7.5 kg/hm2(Si1)、15 kg/hm2(Si2)、22.5 kg/hm2(Si3)、30 kg/hm2(Si4)、37.5 kg/hm2(Si5)和清水对照(Si0)共6个处理,测定不同处理冬小麦植株性状、叶片光合特性及小穗发育和籽粒性状,分析外源硅滴施对弱光胁迫下冬小麦调控效应,并筛选出适宜的外源硅滴施量。【结果】 弱光胁迫下,外源硅滴施可以增加冬小麦的株高、茎粗、穗长和叶片SPAD值;改善了叶片光合性能,提高了旗叶的净光合速率(Pn)、蒸腾速率(Tr)和气孔导度(Gs);增加了可孕小穗数,降低了不孕小穗数;单茎生物量、穗粒数和穗粒重均明显提高;各指标在Si3处理达到最优。【结论】 硅能改善弱光胁迫下冬小麦植株的生长状况,提高光合作用,提高可孕小穗数、穗粒数和穗粒重,以外源硅滴施22.5 kg/hm2时最佳。
中图分类号:
张永强, 方辉, 陈传信, 聂石辉, 赛力汗·赛, 徐其江, 陈兴武, 雷钧杰. 外源硅滴施对弱光胁迫下冬小麦生长及生理特性的影响[J]. 新疆农业科学, 2023, 60(2): 336-343.
ZHANG Yongqiang, FANG Hui, CHEN Chuanxin, NIE Shihui, Sailihan Sai, XU Qijiang, CHEN Xingwu, LEI Junjie. Effect of Exogenous Silicon Drip Application on Growth and Physiological Characteristics of Winter Wheat under Low Light Stress[J]. Xinjiang Agricultural Sciences, 2023, 60(2): 336-343.
图1 外源硅滴施弱光胁迫下冬小麦植株性状变化 注:不同小写字母表示差异达0.05显著水平,下同
Fig.1 Effect of exogenous silicon drip application on plant characters of winter wheat under low light stress Note:The different letters indicate significant difference at 0.05, the same as below
图3 外源硅滴施弱光胁迫下冬小麦叶片光合特性变化
Fig.3 Effect of exogenous silicon drip application on photosynthetic characteristics of winter wheat leaves under low light stress
处理 Treatments | 单茎生物量 Single stem biomass (g/茎) | 穗粒数 Ggrain number per spike (粒) | 穗粒重 Grain weight per spike (g) |
---|---|---|---|
Si0 | 1.32d | 16.43e | 0.62d |
Si1 | 1.77b | 19.10c | 0.89c |
Si2 | 1.84a | 21.27b | 0.92b |
Si3 | 1.85a | 24.63a | 0.96a |
Si4 | 1.51c | 20.47b | 0.90c |
Si5 | 1.36d | 17.63d | 0.63d |
表1 外源硅滴施弱光胁迫下冬小麦产量性状变化
Table 1 Effect of exogenous silicon drip application on yield traits of winter wheat under low light stress
处理 Treatments | 单茎生物量 Single stem biomass (g/茎) | 穗粒数 Ggrain number per spike (粒) | 穗粒重 Grain weight per spike (g) |
---|---|---|---|
Si0 | 1.32d | 16.43e | 0.62d |
Si1 | 1.77b | 19.10c | 0.89c |
Si2 | 1.84a | 21.27b | 0.92b |
Si3 | 1.85a | 24.63a | 0.96a |
Si4 | 1.51c | 20.47b | 0.90c |
Si5 | 1.36d | 17.63d | 0.63d |
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