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沿淮稻茬麦区小麦的产量及籽粒灌浆特性
姜沣益,王犇,任开明,李哲,黄正来,张文静,马尚宇,樊永惠
0
(安徽农业大学农学院/农业部黄淮南部小麦生物学与遗传育种重点实验室,合肥230036)
摘要:
为给沿淮稻茬麦区小麦高产栽培及品种育种提供依据,在大田条件下,选取沿淮麦区6个高产小麦品种为供试材料,用三次多项式方程对籽粒灌浆过程进行拟合,通过相关性分析对小麦籽粒灌浆参数与粒重的关系进行探究,研究不同小麦品种间产量及其构成因素的差异。结果表明: 6个品种中,安农大1216的产量最高,为8 598.77 kg·hm-²,烟农19最低,产量为6 031.07 kg·hm-²;籽粒灌浆过程中安农大1216粒重最高,成熟期千粒重达到51.4 g,郑麦9023的千粒重最低,为47.78 g;各个品种间灌浆速率存在明显差异。不同小麦品种籽粒灌浆过程均呈“S”型变化,因品种不同,灌浆参数也有所不同,但“R²”均达到0.99以上。相关性分析表明,千粒重与理论最大粒重(W)显著相关,与平均灌浆速率(V)、最大灌浆速率(Vmax)、有效灌浆持续期平均灌浆速率(Vs)、有效灌浆持续期粒重增加值(Ws)和最大灌浆速率出现时间(T)呈正相关但未达显著水平。可见筛选的WVVmaxVs、Ws和T等灌浆参数值较高的小麦品种在该地区种植有利于提高小麦千粒重,增加产量。此外,必须考虑到小麦品种、高效栽培方式、管理手段和协调产量构成三因素,才会最大可能实现小麦高产高效。
关键词:  沿淮稻茬麦区  小麦  灌浆特性  相关性分析  产量
DOI:10.13610/j.cnki.1672-352x.20220705.007
投稿时间:2021-09-29
基金项目:安徽省科技重大专项(202003a06020014)资助。
Wheat yield and grain filling characteristics in rice-wheat double cropping area along the Huaihe River
JIANG Fengyi,WANG Ben,REN Kaiming,LI Zhe,HUANG Zhenglai,ZHANG Wenjing,MA Shangyu,FAN Yonghui
(School of Agronomy, Anhui Agricultural University/Key Laboratory of Wheat Biology, Genetics and Breeding in South Huanghuai, Ministry of Agriculture, Hefei 230036)
Abstract:
For the purpose of providing a basis for high-yielding wheat cultivation and cultivar breeding in regions of rice-wheat rotation along Huaihe River, six high-yielding wheat cultivars in the wheat area along Huaihuai were selected as test materials under field conditions, grain filling process was fitted with cubic polynomial equation, and correlation analysis was conducted to investigate relationships between wheat grain filling parameters and grain weight so as to study variations in yield and their constitutive factors among different wheat cultivars. Out of the six cultivars, Annongda 1216 showed the highest yield of 8 598.77 kg·hm-² and Yannong 19 offered the lowest yield of 6 031.07 kg·hm-²; the grain weight of Annongda 1216 was the highest during the seed filling process, reaching 51.4 g at maturity, compared with 47.78 g for Zhengmai 9023; the filling rate of each cultivar differed significantly. Grain filling process of different wheat cultivars showed "S" type variation, and filling parameters were different according to the cultivars, but "R²" reached above 0.99. Correlation analysis showed that 1 000- grain weight was significantly correlated with the maximum theoretical grain weight (W), and it was positively with the average filling rate (V), the maximum filling rate (Vmax), the average filling rate within effective filling duration (Vs), the increase in grain weight over the effective filling period (Ws) and time to emerge of the maximum filling rate (T)(P>0.05). It is clear that the selected wheat cultivars with higher values of perfusion parameters such as W, V, Vmax, Vs, Ws and T are beneficial for increasing wheat 1 000-grain weight and yield in this region. Additionally, three factors, wheat cultivars, efficient cultivation practices, management practices and coordinated productivity components, should also be considered to
Key words:  regions of rice-wheat rotation along Huaihe River  wheat  grout characteristics  correlation analysis  yield

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