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中国农学通报 ›› 2024, Vol. 40 ›› Issue (6): 48-52.doi: 10.11924/j.issn.1000-6850.casb2023-0459

• 农学·农业基础科学 • 上一篇    下一篇

甘蓝型油菜‘秦优1618’的抗倒特性研究

张忠鑫(), 王学芳, 张耀文, 关周博, 董育红(), 郑磊, 杨莉   

  1. 陕西省杂交油菜研究中心,国家油料作物改良中心陕西油菜分中心,陕西杨凌 712100
  • 收稿日期:2023-06-23 修回日期:2023-09-15 出版日期:2024-02-22 发布日期:2024-02-22
  • 通讯作者:
    董育红,男,1971年出生,陕西蓝田人,副研究员,硕士,研究方向:油菜遗传育种。通信地址:712100 陕西省杨凌示范区高干渠路西段6号 陕西省杂交油菜研究中心,Tel:17802937699,E-mail:
  • 作者简介:

    张忠鑫,女,1988年出生,内蒙古赤峰人,助理研究员,硕士,研究方向:油菜育种与栽培技术。通信地址:712100 陕西省杨凌示范区高干渠路西段6号 陕西省杂交油菜研究中心,Tel:18811743004,E-mail:

  • 基金资助:
    适宜机収型油菜品种秦优1618的示范与推广”(LM202106)

Research on Lodging Resistant Characteristics of Brassica napus L. Variety ‘Qinyou 1618’

ZHANG Zhongxin(), WANG Xuefang, ZHANG Yaowen, GUAN Zhoubo, DONG Yuhong(), ZHENG Lei, YANG Li   

  1. Hybrid Rapeseed Research Center of Shaanxi Province/Shaanxi Rapeseed Branch of National Oil Crops Genetic Improvement Center, Yangling, Shaanxi 712100
  • Received:2023-06-23 Revised:2023-09-15 Published-:2024-02-22 Online:2024-02-22

摘要:

为更好地创制、选育抗倒性油菜新种质及新品种提供理论参考。以‘秦优1618’和‘秦优7号’(CK)为试验材料,从茎秆特性、株型结构、根系性状等方面综合解析‘秦优1618’的强抗倒特性。结果表明:‘秦优1618’成熟期茎秆木质素含量(20.35%)、粗纤维素含量(28.19%)、主茎平均抗折力(95.99 N/mm2)均极显著高于CK,穿刺强度(83.1 N/cm2)显著高于CK,特别是其主茎中上部位(60~80 cm)的抗折力优势明显;同时具有较合理的株型结构和较发达的根系:株高适宜(168.5 cm,较CK低11.6 cm)、分枝部位较低(64.2 cm,较CK低9.9 cm)、分枝数较多(7.2枝)、茎秆实心率高、主花序较长、角果数较多;终花期时其根茎粗与CK差异显著。‘秦优1618’在上述各方面都有较突出的抗倒性表现,综合考量植株茎秆特性、株型结构、根系性状等指标而非单一指标,是选育抗倒性油菜新品种的重要方向。

关键词: ‘秦优1618’, 甘蓝型油菜, 抗倒性, 茎秆特性, 株型结构, 根系性状

Abstract:

The aim was to provide theoretical reference for better creating and breeding new germplasm and new varieties of rapeseed with lodging resistance. Taking ‘Qinyou 1618’ and ‘Qinyou 7’ (CK) as the test materials, the strong lodging-resistant characteristics of ‘Qinyou 1618’ were comprehensively analyzed from the aspects of stem characters, plant architectures and root traits. The results showed that the lignin content (20.35%), crude cellulose content (28.19%), and average bending resistance (95.99 N/mm2) of the main stems of ‘Qinyou 1618’ at maturity stage were all extremely significantly higher than those of CK, and the puncture strength (83.1 N/cm2) was significantly higher than that of CK. In particular, the middle and upper parts (60-80 cm) of the main stems had obvious advantages in bending resistance. Meanwhile, ‘Qinyou 1618’ had a more reasonable plant architecture and a more developed root system: suitable plant height (168.5 cm, 11. 6 cm lower than that of CK), lower first-branch height (64.2 cm, 9.9 cm lower than that of CK), higher number of branches (7.2 branches), high rate of stem solidity, longer main inflorescences, higher number of pods; and the root diameters differed significantly from that of CK at the final flowering stage. ‘Qinyou 1618’ has an excellent performance in all of the above-mentioned aspects of lodging resistance, and it is an important direction for breeding new rapeseed varieties with lodging resistance by a comprehensive consideration of stem characters, plant architectures, root traits and other indicators rather than by a single indicator.

Key words: ‘Qinyou 1618’, Brassica napus L., lodging resistance, stem characters, plant architectures, root traits