QTL Analysis on Seedling Stage Traits of Peanut under Salt Stress

doi:10.7668/hbnxb.2018.03.018

Abstract

Abstract: The identification of salt tolerant genetic loci in peanut can provide basis for the molecular mechanism of salt tolerance,and gene sources for improving salt tolerant cultivars. Based on a high-dense genetic map being constructed by using a RIL population derived from the cross between Huayu 28 and P76,we performed QTL analysis for vegetative traits of peanut under salt stress by software IciMapping. As a result,13 QTLs related to absolute value of traits on salt stress on ten linkage groups were detected. 3,2,6 and 2 of 13 QTLs controlled absolute value of plant height,root length,shoot fresh weight and root weight,respectively. 6 QTLs related to relative value of traits on salt stress on five linkage groups were detected. 3,2 and 1 of 6 QTLs controlled relative value of plant height,root length and shoot fresh weight,respectively. 4 QTLs detected in B02 were linked to Marker774175,which were qSmsh-HP-B02.1, qSwfp-HP-B02.1, qRmsh-HP-B02.1, qRwfp-HP-B02.1 related to absolute value and relative value of plant height and stem fresh weight on salt stress,respectively. Synergistic genes of the 4 QTLs derived from Huayu 28. The results provided important information for further exploration of salt tolerant QTL in peanut.

Key words: Peanut, Seedling stage, Salt stress, QTL

CLC Number:

S565.03

MIAO Huarong, YANG Weiqiang, HU Xiaohui, ZHANG Shengzhong, CUI Fenggao, CHEN Jing. QTL Analysis on Seedling Stage Traits of Peanut under Salt Stress[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2018, 33(3): 113-118. doi: 10.7668/hbnxb.2018.03.018.

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