Comparative QTL Analysis for Phytological Traits of Tomato during Vagetative Stage under Salt Stress and Nonstress Conditions

doi:10.7668/hbnxb.2011.05.013

Abstract

Abstract: An advanced backcross population of 130 BC2S4 individuals was developed derived from the cross Solanum lycopersicum 9706 × Solanum cheesmanii LA0317.Six important phytological traits were investigated under salt stress and nonstress conditions,and salt survival value was also evaluated.Using MQM mapping method,a total of 45 QTL for phytological traits of tomato were detected.2 QTL for salt tolerance were mapped to chromosome 3 and 6.Through comparative QTL analysis,it was found that QTL on chromosome 2,3 and 8 could only be detected under salt treatment,while QTL on chromosome 9 and 12 could only be detected under non-salt condition.QTL co-location among different traits was common in this study.Moreover,5 families of BC2S4 were found in this paper to be salt tolerant,thus these lines could be used as good breeding germplasm.

Key words: Tomato, Salt stress, Nonstress, QTL mapping

CLC Number:

S641.2

HUANG Ya-jie, DU Yong-chen, HOU Xi-lin, WANG Xiao-xuan, GAO Jian-chang, GUO Yan-mei. Comparative QTL Analysis for Phytological Traits of Tomato during Vagetative Stage under Salt Stress and Nonstress Conditions[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2011, 26(5): 58-65. doi: 10.7668/hbnxb.2011.05.013.

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