紫肉甘薯花色苷含量的变化规律及其与主要经济性状的相关分析

中国农业科学 ›› 2007, Vol. 40 ›› Issue (10): 2185-2192 .

紫肉甘薯花色苷含量的变化规律及其与主要经济性状的相关分析

傅玉凡,陈敏,叶小利,张启堂,廖志华,杨春贤

西南大学生命科学学院/三峡库区生态环境教育部重点实验室/重庆市甘薯研究中心西南大学生命科学学院西南大学生命科学学院

收稿日期:2006-10-23 修回日期:1900-01-01 出版日期:2007-10-10 发布日期:2007-10-10

Accumulation of Anthocyanin in Developing Root and its Relationships with Major Economic Traits in Purple-Fleshed Sweetpotato ( Ipomoea Batatas (L.) Lam )

西南大学生命科学学院/三峡库区生态环境教育部重点实验室/重庆市甘薯研究中心西南大学生命科学学院西南大学生命科学学院

Received:2006-10-23 Revised:1900-01-01 Online:2007-10-10 Published:2007-10-10

摘要/Abstract

摘要： 【目的】研究紫肉甘薯块根花色苷含量在生育过程中和品种间的变化规律及其与主要经济性状的相关性。【方法】栽插后20、40、60、80、100、120及140 d调查13个紫肉甘薯品种的花色苷含量、最长蔓长，分枝数，结薯数，茎、叶、块根干物质含量，块根鲜重, 块根干重，茎鲜重、茎干重、叶鲜重、叶干重，茎叶鲜重、茎叶干重，分析整株鲜重、整株干重，茎、叶、块根干重占整株干重的百分比等20个经济性状以及花色苷含量变化与其余19个经济性状的变化和10个产量性状日增长量的相关性。【结果】（1）紫肉甘薯块根花色苷含量在生育过程中存在缓慢增加型、波动变化型和曲折上升型3种变化类型, 对最长蔓长、分枝数、块根鲜重、块根干重、光合产物的分配等经济性状的发育有不同的生物学响应。（2）品种间的花色苷含量在20 d以后逐渐产生显著差异，在40～100 d完成类型分化, 与品种的分枝数、块根鲜重、块根干重、光合产物在块根中的分配比例显著负相关，与块根干物质含量、最长蔓长、茎鲜重、茎干重、整株干重及光合产物在叶中的分配比例显著正相关。（3）花色苷日增长量与块根干重日增长量显著负相关，花色苷积累与块根膨大、干物质积累存在竞争关系，这种竞争关系在不同品种中得到不同解决。【结论】由于花色苷积累与干物质积累存在的竞争关系在不同品种中的协调不同，紫肉甘薯品种间的花色苷含量在生育过程中产生显著差异和分化，存在缓慢增加、波动变化和曲折上升3种变化类型。花色苷含量的这些变化与主要经济性状有不同的相关关系。

关键词: 紫肉甘薯, 花色苷, 花色苷含量变化, 经济性状, 相关性

Abstract: Abstract: 【Objective】Accumulation law of anthocyanin in developing root and the relationship between the law and major economic traits in purple-fleshed sweetpotato ( Ipomoea Batatas (L.) Lam ) were studied in present paper. 【Method】The dynamics of 20 kinds of economic traits in 13 purple-fleshed sweetpotato varieties at 20d, 40d, 60d, 80d, 100d, 120d and140d after their transplanting were investigated, these traits included anthocyanin content in root, length of the longest stem, number of base branches, root number, dry matter contents in stem, foliage and root, fresh and dry yields of root, fresh and dry yields of stem, fresh and dry yields of foliage, fresh and dry yields of vine, fresh and dry yields of whole plant, and rations of photosynthate to root, to stem and to foliage. The correlationships of anthocyanin content with other 19 economic traits in varieties and whole developmental stages were analyzed. So as the correlationships of daily growth rate of anthocyanin content with other daily growth rates of 10 kinds of yields. 【Result】 (1) There were three types of anthocyanin accumulation in these purple-fleshed sweetpotatoes, that is slowly increasing, fluctuating and devious ascending. (2) Anthocyanin content had significant negatively correlationships with the number of base branches, fresh and dry yields of root, ration of photosynthate to root，and had significant positive correlationships with dry matter content of root, length of the longest stem, fresh and dry yields of stem,, dry yield of whole plant and ration of photosynthate to foliage, and had no significant correlationships with other economic traits among purple-fleshed sweetpotato varieties. (3) Purple-fleshed sweetpotatoes belonging to different types of anthocyanin accumulation had different responses to the growth of length of the longest stem, number of base branches, fresh and dry yields of root and photosynthate allotments, and had no responses to the growth of other economic traits during whole developmental stages. (4) Because of the significant negative correlationship between daily growth rates of anthocyanin content and dry matter yield of root, the anthocyanin accumulation competed with dry matter accumulation for photosynthate in root, and the competitive relation was resolved in different way in different purple-fleshed sweet potato varieties.【Conclusion】The three types of anthocyanin accumulation in purple-fleshed sweetpotato can be demonstrated by the their different responses to the growth of economic traits , the competitive relations in accumulations of anthocyanin and dry matter in root, and their different settling ways of these competitive relations. The anthocyanin accumulation characteristics will give scientific proofs for the further research, breeding, cultivation and industrialization of purple-fleshed sweetpotato.

Key words: Purple-fleshed sweetpotato, Anthocyanin, Anthocyanin accumulation, Economic trait, Correlationship

傅玉凡,陈敏,叶小利,张启堂,廖志华,杨春贤. 紫肉甘薯花色苷含量的变化规律及其与主要经济性状的相关分析[J]. 中国农业科学, 2007, 40(10): 2185-2192 .

. Accumulation of Anthocyanin in Developing Root and its Relationships with Major Economic Traits in Purple-Fleshed Sweetpotato ( Ipomoea Batatas (L.) Lam )[J]. Scientia Agricultura Sinica, 2007, 40(10): 2185-2192 .

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