[1]王巧妹,王继武,管志勇,等.茶用菊七月白×苏菊7号F1代群体与产量相关性状的变异分析及高产植株筛选[J].江苏农业学报,2022,38(02):512-520.[doi:doi:10.3969/j.issn.1000-4440.2022.02.027]
　WANG Qiao-mei,WANG Ji-wu,GUAN Zhi-yong,et al.Genetic variation of yield-related traits and screening of high-yield hybrid plants in tea chrysanthemum Qiyuebai× Suju 7 F1 segregating progeny[J].,2022,38(02):512-520.[doi:doi:10.3969/j.issn.1000-4440.2022.02.027]
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茶用菊七月白×苏菊7号F1代群体与产量相关性状的变异分析及高产植株筛选()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
38
期数:
2022年02期
页码:
512-520
栏目:
园艺
出版日期:
2022-04-30

文章信息/Info

Title:
Genetic variation of yield-related traits and screening of high-yield hybrid plants in tea chrysanthemum Qiyuebai× Suju 7 F1 segregating progeny
作者:
王巧妹1; 王继武2; 管志勇1; 房伟民1; 陈发棣1; 张飞1
（1.南京农业大学园艺学院/作物遗传与种质创新国家重点实验室/国家林业和草原局华东地区花卉生物学重点实验室，江苏南京210095；2.滁州市应用技术学校，安徽全椒239500）
Author(s):
WANG Qiao-mei1; WANG Ji-wu2; GUAN Zhi-yong1; FANG Wei-min1; CHEN Fa-di1; ZHANG Fei1
(1.College of Horticulture, Nanjing Agricultural University/State Key Laboratory of Crop Genetics & Germplasm Enhancement/Key Laboratory of Biology of Ornamental Plants in East China, National Forestry and Grassland Administration, Nanjing 210095, China;2.Chuzhou Application Technical School, Quanjiao 239500, China)
关键词:
茶用菊; 杂交育种; 产量; 遗传变异; 通径分析; 综合评价
Keywords:
tea chrysanthemum; cross breeding; yield; genetic variation; path analysis; comprehensive evaluation
分类号:
S571.9
DOI:
doi:10.3969/j.issn.1000-4440.2022.02.027
文献标志码:
A
摘要:
以茶用菊七月白×苏菊7号F1代分离群体为材料，调查16个与产量相关的性状(初花期、盛花期、单花鲜质量、单花干质量、百花鲜质量、百花干质量、花径、舌状花长、舌状花宽、舌状花数、管状花数、株高、冠幅、分枝数、叶长、叶宽)的遗传变异情况，通过相关性分析和通径分析研究茶用菊产量的影响因素及其关系，利用主成分分析和隶属函数方法在杂交F1代群体中筛选高产杂交植株，以期为茶用菊高产育种提供依据和重要的育种中间材料。变异分析结果表明，七月白×苏菊7号F1代群体中各性状表现出不同程度的变异，变异系数为7.82%～96.80%，其中单花鲜质量、单花干质量、百花鲜质量、百花干质量等4个产量性状的变异系数为35.99%～40.18%。16个性状的广义遗传力均较高（>60.00%）；除花径、舌状花长、舌状花宽、分枝数、叶宽外，其余11个性状的中亲优势均达极显著水平，中亲优势率为-54.42%～42.45%；单花鲜质量、单花干质量、百花鲜质量、百花干质量的中亲优势率为18.44%～42.45%，超高亲率为46.51%～68.60%，为选择茶用菊高产株系奠定了基础。相关性分析结果表明，单花鲜质量、单花干质量、百花鲜质量、百花干质量4个产量性状与绝大多数形态性状（除冠幅）存在显著或极显著的相关性，除了与管状花数、分枝数呈负相关外，与其他性状均表现出正相关。通径分析结果表明，单花鲜质量、株高对产量具有正向直接作用（直接通径系数分别为0.77、0.22），且单花鲜质量、株高通过彼此对茶用菊产量具有正向间接作用；株高的决策系数（0.17）高于单花鲜质量的决策系数（-0.02），表明株高是影响茶用菊产量的重要指标。通过主成分分析结合隶属函数分析，在杂交F1代群体中共筛选出10个高产杂交植株，为今后茶用菊高产育种提供了重要的中间材料。综上，本研究初步明确了与茶用菊产量相关的性状及其遗传特点，相关研究结果有助于提高茶用菊高产育种的效率。
Abstract:
In this study, genetic variation of the 16 yield-related traits was investigated in tea chrysanthemum Qiyuebai × Suju 7 F1 segregating population, correlation and path analyses were performed to determine the influencing factors of yield and their relationship, and principal component analysis and membership function method were used to screen hybrid plants with higher yield, so as to provide valuable basis and intermediate materials for tea chrysanthemum breeding. Genetic variation analysis demonstrated that phenotypic variation of the investigated traits ranged in 7.82%-96.80%, and the variation coefficients of fresh and dry weight of single flower and 100-flower were 35.99%-40.18%. The relative high broad-sense heritabilities larger than 60.00% were calculated for the investigated traits, and all traits except flower diameter, length and width of ray floret, branch number and leaf width had significant midparent heterosis, with the ratio of heterosis in a range of -54.42%-42.45%. The mid-parent heterosis of fresh and dry weight of single flower and 100-flower ranged from 18.44% to 42.45%, and the over-high parent heterosis rate was 46.51%-68.60%, which laid the foundation for selecting high-yield lines. Correlation analysis revealed that the yield traits, fresh and dry weight of single flower and 100-flower showed significant or extremely significant correlations with other morphological traits except plant crown width, and the interrelationships were positive except for tubular floret number and branch number. Path analysis revealed that the single flower fresh weight and plant height had positive direct effects on yield with direct path coefficients of 0.77 and 0.22, and the two traits had positive indirect effects on yield through each other. The decision coefficient of plant height (0.17) was higher than that of single flower fresh weight (-0.02), thus plant height should be the major decision index affecting tea chrysanthemum yield. By the combined methods of principal component and membership function analyses, ten hybrid plants with higher yield were screened out as candidate intermediate materials for breeding high-yield cultivars. In conclusion, this study preliminarily clarifies the traits related to the yield of tea chrysanthemum and genetic characteristics, and the results will allow plant breeders to more efficiently increase tea chrysanthemum yield in future breeding programs.

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备注/Memo

备注/Memo:
收稿日期：2022-02-14基金项目：江苏现代农业（花卉）产业技术体系建设项目[JATS(2021)454、JATS(2021)021]；江苏省农业科技创新与推广专项（2021-SJ-011）作者简介：王巧妹（1996-），女，山东烟台人，硕士研究生，研究方向为花卉种质资源与遗传育种。（E-mail）1427142729@qq.com通讯作者：张飞，（E-mail）zhangfei@njau.edu.cn
更新日期/Last Update: 2022-05-07