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农学学报 ›› 2022, Vol. 12 ›› Issue (2): 40-46.doi: 10.11923/j.issn.2095-4050.cjas2020-0008

所属专题: 生物技术 油料作物

• 林学/园艺/园林/食用菌 • 上一篇    下一篇

早熟甘蓝型油菜抗裂角性鉴定及材料筛选

田正书1(), 罗延青1, 迟旭春2, 赵凯琴1, 张云云1, 符明联1, 李劲峰1()   

  1. 1云南省农业科学院经济作物研究所,昆明 650205
    2寻甸县植保植检工作站,云南寻甸 655200
  • 收稿日期:2020-07-06 出版日期:2022-02-20 发布日期:2022-03-16
  • 通讯作者: 李劲峰 E-mail:ZS_tian2017@163.com;jinfengli2005@126.com
  • 作者简介:田正书,女,1989年出生,四川达州人,研究实习员,博士在读,研究方向:油菜种质资源创新与高效栽培。通信地址:650205 云南省昆明市盘龙区北京路2238号 云南省农业科学院经济作物研究所,Tel:0871-65893842,E-mail: ZS_tian2017@163.com
  • 基金资助:
    国家重点研发计划子课题“云南区油菜优异种质资源精准鉴定与发掘利用”(2016YFD0100202-1);国家油菜产业技术体系昆明综合实验站建设(CARS-12);云南省现代农业油菜产业技术体系(2019KJTX005)

Identification of Pod Shattering Resistance of Early-maturing Brassica napus L. and Material Screening

TIAN Zhengshu1(), LUO Yanqing1, CHI Xuchun2, ZHAO Kaiqin1, ZHANG Yunyun1, FU Minglian1, LI Jinfeng1()   

  1. 1Industrial Crop Research Institute, Yunnan Academy of Agricultural Sciences, Kunming 650205, Yunnan, China
    2Xundian County Station of Plant Protection and Inspection, Xundian 655200, Yunnan, China
  • Received:2020-07-06 Online:2022-02-20 Published:2022-03-16
  • Contact: LI Jinfeng E-mail:ZS_tian2017@163.com;jinfengli2005@126.com

摘要:

为筛选适宜在早熟油菜产区种植的抗裂角油菜品种,推动早熟油菜产区机械化生产进程,本实验采用随机碰撞法对98份早熟甘蓝型油菜材料进行抗裂角指数(SRI)测定,并结合相关农艺性状对测定结果进行聚类和相关性分析。结果表明,SRI变异系数为41.38%;SRI≥0.4(具有抗裂角能力)的材料占68.4%。98份材料被聚为A、B、C类,A类群平均SRI为0.35,表现易裂;B类群平均SRI为0.93,表现高抗;C类群平均SRI为0.65,表现中抗。相关性分析显示,SRI与角果长度呈极显著正相关,与千粒重呈显著正相关,说明角果长度和千粒重显著影响油菜裂角抗性,两者可以作为抗裂角油菜筛选的形态指标。综合产量和含油量等性状,对SRI>0.4的供试材料进行筛选,最终筛选出10份抗裂角性较好且比对照(‘花油8号’)增产5%以上的早熟油菜品种(组合、品系),为下一步早熟油菜抗裂角性状的表型鉴定、遗传分析以及分子标记辅助转育等提供理论指导。

关键词: 早熟甘蓝型油菜, 抗裂角指数, 品种筛选, 产量, 农艺性状

Abstract:

To screen pod shattering resistant varieties and to promote the mechanized production process of rapeseed (Brassica napus L.) in areas of early-maturing varieties, pod shattering resistance index (SRI) of 98 early-maturing Brassica napus L. materials was assessed with random impact test method. The testing results were analyzed by cluster analysis and correlation analysis in combining with related agronomic traits. The results showed that the coefficient of variation (CV) of SRI was 41.38%, and the materials with SRI≥0.4 accounted for 68.4%. The cluster analysis demonstrated that the 98 early-maturing Brassica napus L. materials were clustered into three groups: A, B, and C. The average SRI of group A was 0.35, presenting easy shattering. The average SRI of group B was 0.93, presenting high resistance to shattering. The average SRI of group C was 0.65, presenting moderate resistance. The correlation analysis with main agronomic traits showed that SRI had an extremely and significantly positive correlation with pod length and a significantly positive correlation with 1000-seed weight, indicating that pod length and 1000-seed weight significantly affected pod shattering resistance, and both the two indexes could be used in shattering resistance screening of Brassica napus L.. Finally, the test materials with SRI>0.4 were screened in terms of yield and oil content, and 10 materials which had higher SRI and 5% more yield increase compared with that of CK (‘HY8’) were screened out. The study could provide theoretical guidance for phenotypic identification, genetic analysis and molecular marker-assisted selection of pod shattering resistance in early-maturing Brassica napus L..

Key words: early-maturing Brassica napus L., pod shattering resistant index, variety screen, yield, agronomic traits