Genetic analysis of inflorescence length in Solanum pimpinellifolium

文献类型： 外文期刊

第一作者： Hu, Junling

作者： Hu, Junling;Li, Xin;Zhang, Hui;Lu, Xiaoxiao;Pan, Feng;Pan, Chunyang;Su, Wenyue;Zhang, Min;Xu, Maomao;Zhang, Chen;Shi, Lianfeng;Guo, Yanmei;Huang, Zejun;Wang, Xiaoxuan;Du, Yongchen;Liu, Lei;Li, Junming

作者机构：

关键词： Solanum pimpinellifolium; Inflorescence length; Genetic analysis; Major genes plus polygene

期刊名称：GENETIC RESOURCES AND CROP EVOLUTION （ 影响因子：2.0； 五年影响因子：1.9 ）

ISSN： 0925-9864

年卷期： 2023 年

页码：

收录情况： SCI

摘要： Crop inflorescences are directly related to yield. The wild tomato species Solanum pimpinellifolium displays rich genetic diversity. However, limited information is available regarding the inflorescence of this wild population. Here, 300 Solanum pimpinellifolium accessions were investigated to uncover the genetics of inflorescence length (IFL) over two seasons. The results revealed significant genetic variation in IFL among S. pimpinellifolium accessions, with a continuous distribution ranging from 3.68 to 38.13 cm. Few accessions exhibited long inflorescences. The IFL was greatly influenced by environmental factors and the 3rd, 4th and 5th IFL performed relatively stable. The broad-sense heritability ranged from 53.40 to 80.51%. One accession LA1256 showed the longest IFL and most stable across two seasons. Six-generation populations were constructed by crossing LA1256 with the cultivar Moneymaker, possessing very short IFL to understand the genetic mechanism. F1 progeny clearly indicated that long inflorescence was a recessive trait. The further genetic analysis indicated that IFL fitted the E-0 genetic model and the heritability estimates ranged from 50.40 to 65.38% in B1, B2 and F2 populations. The IFL was mainly controlled by major genes and modified by the polygene. These findings obtained in this study would pave the way for a detailed understanding of the inflorescence of wild species S. pimpinellifolium and provide the strategy for the manipulation of tomato improvement.

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