玉米茎秆强度与维管束数目及纤维含量的关系和评价

周海宇,江禹奉,杨明冲,程伟东,覃兰秋,谢小东,谢和霞,覃宝祥,王令强

植物遗传资源学报. 2022, 23(6): 1636-1643

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植物遗传资源学报 ›› 2022, Vol. 23 ›› Issue (6) : 1636-1643. DOI: 10.13430/j.cnki.jpgr.20220419004
论文

玉米茎秆强度与维管束数目及纤维含量的关系和评价

  • 周海宇1,2,3, 江禹奉2, 杨明冲1, 程伟东2, 覃兰秋2, 谢小东2, 谢和霞2, 覃宝祥1,3, 王令强1,3
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Relationship and Evaluation of Stalk Strength，VascularBundle and Fiber Content in Maize

  • ZHOU Hai yu1,2,3, JIANG Yu-feng2, YANG Ming-chong1, CHENG Wei-dong2, QIN Lan-qiu2, XIE Xiao-dong2, XIE He-xia2, QIN Bao-xiang1,3, WANG Ling-qiang1,3
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摘要

玉米茎秆倒伏严重影响产量、品质和机械化收获。本研究以110份遗传多样性丰富的玉米种质资源为研究对象，对包括茎秆强度、维管束和纤维含量等8个性状进行相关性分析，并比较不同血缘种质的差异。结果表明，弯折强度与穿刺强度、大维管束数目与小维管束数目、中性洗涤纤维与酸性洗涤纤维、中性洗涤纤维与半纤维素具有协同作用；大维管束数目越多弯折强度越强，抗倒性越好；中性洗涤纤维含量越高弯折和穿刺强度越强，抗倒性越好；在广西南宁生态环境条件下，热带种质的茎秆强度较强、维管束数目较多、纤维含量较高，从热带种质中较易选育抗倒性强的优异种质资源。研究结果可为玉米抗倒性研究提供理论参考，为热带种质在玉米抗倒性方面的改良和利用提供借鉴。

Abstract

Maize stalk lodging seriously affects yield, quality and mechanized harvest. In this study, 110 maize germplasm resources with rich genetic diversity were used to analyze the correlation among 8 traits of stalk strength, vascular bundle and fiber content, and the differences of consanguinity germplasm were compared. The results show that there is a synergistic effect between bending strength and puncture strength, the number of large vascular bundles and the number of small vascular bundles, neutral detergent fiber and acid detergent fiber, neutral detergent fiber and hemicellulose. Four traits, including the number of large vascular bundles, the content of neutral detergent fiber, the bending strength and the puncture strength, all positively correlated with the lodging resistance. Under climatic conditions in Nanning, Guangxi, the tropical maize germplasms showed stronger stalk strength, more vascular bundles and higher fiber content, in which elite germplasms with strong lodging resistance were identified. Collectively, these results provided theoretical reference for deciphering the lodging resistance of maize, which has implication for the improvement and utilization of tropical maize germplasms.

关键词

玉米；抗倒性；茎秆强度；维管束；纤维

Key words

maize / lodging resistance / stalk strength / vascular bundle / fiber

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周海宇,江禹奉,杨明冲,程伟东,覃兰秋,谢小东,谢和霞,覃宝祥,王令强. 玉米茎秆强度与维管束数目及纤维含量的关系和评价. 植物遗传资源学报. 2022, 23(6): 1636-1643 https://doi.org/10.13430/j.cnki.jpgr.20220419004
ZHOU Hai yu,JIANG Yu-feng,YANG Ming-chong,CHENG Wei-dong,QIN Lan-qiu,XIE Xiao-dong,XIE He-xia,QIN Bao-xiang and WANG Ling-qiang. Relationship and Evaluation of Stalk Strength，VascularBundle and Fiber Content in Maize. Journal of Plant Genetic Resources. 2022, 23(6): 1636-1643 https://doi.org/10.13430/j.cnki.jpgr.20220419004

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