[1]赵波,吴雅薇,李小龙,等.玉米生理成熟后籽粒脱水特性[J].江苏农业学报,2020,(01):10-17.[doi:doi:10.3969/j.issn.1000-4440.2020.01.002]
 ZHAO Bo,WU Ya-wei,LI Xiao-long,et al.Dehydration characteristics of maize grain after physiological maturity[J].,2020,(01):10-17.[doi:doi:10.3969/j.issn.1000-4440.2020.01.002]
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玉米生理成熟后籽粒脱水特性()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2020年01期
页码:
10-17
栏目:
遗传育种·生理生化
出版日期:
2020-02-29

文章信息/Info

Title:
Dehydration characteristics of maize grain after physiological maturity
作者:
赵波吴雅薇李小龙袁继超孔凡磊
(四川农业大学农学院/农业部西南作物生理生态与耕作重点实验室,四川成都611130)
Author(s):
ZHAO BoWU Ya-weiLI Xiao-longYUAN Ji-chaoKONG Fan-lei
(College of Agronomy, Sichuan Agricultural University/Key Laboratory of Crop Physiology, Ecology and Cultivation in Southwest China, Ministry of Agriculture, Chengdu 611130, China)
关键词:
玉米生理成熟籽粒脱水logistic模型
Keywords:
maizephysiological maturitygrain dehydrationlogistic model
分类号:
S513
DOI:
doi:10.3969/j.issn.1000-4440.2020.01.002
文献标志码:
A
摘要:
明确玉米生理成熟后籽粒脱水特性及与各器官脱水的关系,对加快玉米生理成熟后籽粒脱水速率和选育籽粒脱水速率快的品种具有重要意义。试验选用4个品种,从生理成熟期开始至生理成熟后31 d止,连续测定籽粒、穗轴、苞叶+果柄、叶片和茎秆的含水率,并分析生理成熟后籽粒脱水特性及其与各器官含水率的关系。结果表明,参试品种籽粒含水率降至28%所需生理成熟后积温及天数分别为197.08~353.32 ℃·d和7.3~12.9 d。籽粒含水率与其他器官含水率均呈极显著线性关系,籽粒脱水速率与穗轴脱水速率呈极显著正相关,与其他器官脱水速率相关性不显著。说明,合理的品种选择和缩短玉米生理成熟后籽粒脱水前期的持续时间可有效加快生理成熟后籽粒脱水,降低玉米生理成熟期籽粒含水率降至28%或25%所需积温;评价适宜机械粒收品种时,在关注籽粒脱水特性的同时需关注穗轴的脱水特性。
Abstract:
It is of great significance to clarify the dehydration characteristics of maize grains after physiological maturity and the relationship with dehydration of various organs for speeding up the dehydration rate of maize grains after physiological maturity and breeding varieties with fast dehydration rate. Four varieties were selected to determine the moisture content of grain, cob, bract + stalk, leaf and stem from the beginning of physiological maturity to 31 days after physiological maturity. In addition, the dehydration characteristics of grains after physiological maturation and their relationship with water content of organs were analyzed. The results showed that moisture content of the tested varieties decreased to 28%. The accumulated temperature after physiological maturity and days were 197.08-353.32 ℃·d and 7.3-12.9 d. The grain moisture content showed a very significant linear relationship with the moisture content of other organs, the grain dehydration rate was significantly positively correlated with the dehydration rate of cob, but had no significant relationship with the dehydration rate of other organs. Therefore, reasonable variety selection and shortening the duration of grain dehydration in early stage after physiological maturity of maize can effectively speed up grain dehydration after physiological maturity and reduce the accumulated temperature required for moisture content of physiological maturity to 28% or 25%. To evaluate varieties suitable for mechanical grain harvest, we should pay attention to the dehydration characteristics of cob as well as the dehydration characteristics of grain.

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备注/Memo

备注/Memo:
收稿日期:2019-06-22基金项目:国家重点研发计划项目(2016YFD0300307、2017YFD030170)作者简介:赵波(1994-),男,四川绵阳人,硕士研究生,研究方向为玉米机械化籽粒直收技术。(E-mail)sicauzb4633@163.com通讯作者:孔凡磊, (Tel)18628222445
更新日期/Last Update: 2020-03-13