中国大豆微核心种质光温综合反应敏感性的鉴定
作者:
作者单位:

1.中国农业科学院作物科学研究所/农业部北京大豆生物学重点实验室;2.济宁市农业科学研究院

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基金项目:

国家重点研发计划(2017YFD0101400);国家大豆产业技术体系(CARS-04);中国农业科学院农业科技创新工程


Identification of Photothermal Comprehensive Responses in Chinese Soybean Mini Core Collection
Author:
Affiliation:

1.Institute of Crop Science,Chinese Academy of Aricultural Sciences/MOA Key Laboratory of Soybean Biology (Beijing);2.Jining Academy of Agricultural Sciences

Fund Project:

National Key R D Program of China (2017YFD0101400); China Agriculture Research System (CARS-04); CAAS Agricultural Scienceand Technology Innovation Project

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    摘要:

    大豆是典型的短日喜温作物,光温敏感性决定大豆品种的地理适应范围。为深入了解中国大豆品种主要生态类型 的光温反应特性,以 282 份中国大豆微核心种质为材料在山东济宁进行春、夏两期播种,根据两个播期条件下开花期(R1) 的差异,计算参试种质的光温综合反应敏感度(PCRS)。结果表明,中国大豆微核心种质光温综合反应差异较大,生育期性 状变异丰富。随着供试种质生育期组的增加,光温综合敏感度增大。不同播期类型大豆光温综合反应敏感度大小顺序为:秋 大豆>夏大豆>春大豆。根据光温敏综合反应敏感度的差异将我国大豆微核心种质分为敏感、中度敏感及钝感 3 种类型。春 播、夏播材料以光温综合反应中度敏感材料居多,而在秋播品种中,敏感材料的比例达 63.6%。从 3 种类型在不同生育期组 中的分布情况看,光温综合反应敏感材料主要分布在晚于 MGIII 的品种中,中度和钝感材料在大部分生育期组中均有分布。 生育期组与大豆品种光温反应综合敏感度极显著相关,该性状可作为反映大豆品种的光温生态特性的简便和可靠指标。研究 结果有助于全面了解我国大豆种质资源的光温反应特性,为挖掘、利光温钝感资源,选育广适应大豆品种提供理论依据。

    Abstract:

    Soybean is a typical short-day thermophilic crop and the sensitivity to photothermal environments determines the geographic adaptablity of soybean varieties. To further understand the photothermal responses, 282 Chinese accessions in mini core collection (MCC) were planted under both Spring and Summer cropping seasons in Jining, Shandong province of China. Photothermal comprehensive response sensitivity (PCRS) of the MCC was calculated based on the days from emergence to the beginning bloom (R1). The results showed a broad range of variations in PCRS and growth periods among the MCC germplasm. PCRS increased along with the maturity groups of MCC. PCRS values of the major soybean ecotypes was ordered as follows: autumn-sowing soybeans > summer-sowing soybeans > spring-sowing soybeans. Based on the PCRS values, the Chinese soybean MCC accessions were classified into three classes: sensitive, medium and insensitive in photothermal sensitivity. A larger proportion of the spring-sowing and summer-sowing varieties showed medium-sensitive, while 63.6% of the autumn-sowing varieties were found to be photothermal-sensitive. The sensitive germplams belonged mainly to MGIII or above (later), and the medium-sensitive and insensitive germplasms covered all maturity groups (MGs). MG value of a given variety is highly related to its PCRS, indicating that MG is a simple and reliable index to express the comprehensive response of soybeans. The gained results will be helpful to understand the photothermal characteristics of soybean germplasm in China and provide a theoretical basis, in order to explore and utilize the photo-insensitive germplasm in future breeding for widely-adapted soybean varieties.

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引用本文

宋雯雯,李继存,赵云,等.中国大豆微核心种质光温综合反应敏感性的鉴定[J].植物遗传资源学报,2020,21(1):146-153.

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  • 收稿日期:2019-06-06
  • 最后修改日期:2019-11-15
  • 录用日期:2019-07-19
  • 在线发布日期: 2020-01-17
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