| 不同蔗区甘蔗品种（系）分蘖性状比较及其对产量和产量构成因子的影响 |
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| 引用本文： | 李佳慧,程琴,欧克纬,谭秦亮,庞新华,周全光,吕平,宋奇琦,唐毓玮,朱鹏锦.不同蔗区甘蔗品种（系）分蘖性状比较及其对产量和产量构成因子的影响[J].作物杂志,2021,37(5):79-127. |
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| 作者姓名： | 李佳慧 程琴 欧克纬 谭秦亮 庞新华 周全光 吕平 宋奇琦 唐毓玮 朱鹏锦 |
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| 作者单位： | 广西壮族自治区亚热带作物研究所,530001,广西南宁 |
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| 基金项目： | 广西科学研究与技术开发计划项目(桂科攻1598006-1-1B);广西自然科学基金(2017JJB130314);广西农业科学院科技发展基金项目(桂农科2020YM132);广西农业科学院基本科研业务专项(桂农科2021YT151) |
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| 摘 要： | 为明确不同蔗区甘蔗品种（系）间的分蘖性状差异及其对产量及产量构成因子的影响,在3个蔗区的5个试验点对4个不同甘蔗品种（系）的分蘖农艺性状、产量构成因子进行显著性、相关性、变异系数和通径分析。结果表明,不同蔗区甘蔗品种（系）间的分蘖性状差异显著,分蘖率和分蘖苗数对有效茎的产生具有重要作用;根据分蘖农艺性状的差异将甘蔗分为低分蘖甘蔗品种（系）（新台糖22号、桂糖42号）和高分蘖甘蔗品种（系）（桂热2号、凉蔗03-81）,与高分蘖甘蔗品种（系）产量相关性最高的产量构成因子是有效茎数（0.76**）,低分蘖甘蔗品种（系）则是单茎重（0.83**）,高分蘖（0.64*）和低分蘖品种（系）的分蘖率（0.68*）与有效茎数呈显著正相关关系;有效茎数对2种类型甘蔗产量的直接通径系数最大,是影响甘蔗产量的主要因子;分蘖苗数和分蘖率的变异系数最大,具有较高的改良潜力。综上所述,分蘖可以显著提高有效茎数,从而影响甘蔗产量,且影响甘蔗产量和产量构成因子之间的关系。
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| 关 键 词： | 甘蔗 分蘖 有效茎 产量构成因子 |
| 收稿时间： | 2020-12-08 |
Comparison of Tiller Characters of Sugarcane Varieties (Lines) in Different Sugarcane Regions and Their Effects on Yield and Yield Components |
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| Li Jiahui,Cheng Qin,Ou Kewei,Tan Qinliang,Pang Xinhua,Zhou Quanguang,Lü,Ping,Song Qiqi,Tang Yuwei,Zhu Pengjin.Comparison of Tiller Characters of Sugarcane Varieties (Lines) in Different Sugarcane Regions and Their Effects on Yield and Yield Components[J].Crops,2021,37(5):79-127. |
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| Authors: | Li Jiahui Cheng Qin Ou Kewei Tan Qinliang Pang Xinhua Zhou Quanguang Lü Ping Song Qiqi Tang Yuwei Zhu Pengjin |
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| Institution: | Guangxi Subtropical Crops Research Institute, Nanning 530001, Guangxi, China |
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| Abstract: | The study was designed to understand the difference of tillering characters between sugarcane varieties (lines) and its influence on yield and yield components. The significance, correlation, coefficient of variation and path analysis of tiller agronomic characters and yield components of four different sugarcane varieties (lines) were carried out at five test sites in three sugarcane regions. The results showed that there were significant differences in tiller characters among sugarcane varieties (lines) in different sugarcane regions, and the tillering rate and the number of tillers played an important role in the production of available canes. Sugarcane varieties (lines) were divided into low-tillering sugarcane varieties (lines) (Xintaitang 22, Guitang 42) and high-tillering sugarcane varieties(lines) (Guire 2, Liangzhe 03-81). The highest correlation with the yield of high-tillering sugarcane varieties (lines) was available stem number (0.76**), while that of low-tillering sugarcane varieties (lines) was single stem weight (0.83**), and there was a significant positive correlation between tillering rate and available canes (0.64*, 0.68*). The number of available canes had the greatest direct path coefficients on the yield of the two types of sugarcane and the available canes were the main factors affecting the yield of sugarcane. The variation coefficients of tiller number and tillering rate were the highest, which had the high potential for improvement. In conclusion, the tillering of sugarcane could significantly increase the number of available canes and influence on sugarcane yield, and affect the relationship between sugarcane yield and yield components. |
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| Keywords: | Sugarcane Tillering Available canes Yield components |
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