Multiple QTLs Linked to Agro-Morphological and Physiological Traits Related to Drought Tolerance in Potato

Plant Molecular Biology Reporter
M Awais KhanMerideth Bonierbale

Abstract

Dissection of the genetic architecture of adaptation and abiotic stress-related traits is highly desirable for developing drought-tolerant potatoes and enhancing the resilience of existing cultivars, particularly as agricultural production in rain-fed areas may be reduced by up to 50 % by 2020. The "DMDD" potato progeny was developed at International Potato Center (CIP) by crossing the sequenced double monoploid line DM and a diploid cultivar of the Solanum tuberosum diploid Andigenum Goniocalyx group. Recently, a high-density integrated genetic map based on single nucleotide polymorphism (SNP), diversity array technology (DArT), simple sequence repeats (SSRs), and amplified fragment length polymorphism (AFLP) markers was also made available for this population. Two trials were conducted, in greenhouse and field, for drought tolerance with two treatments each, well-watered and terminal drought, in which watering was suspended 60 days after planting. The DMDD population was evaluated for agro-morphological and physiological traits before and after initiation of stress, at multiple time points. Two dense parental genetic maps were constructed using published genotypic data, and quantitative trait locus (QTL) analysis identified 4...Continue Reading

References

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Citations

May 31, 2015·BMC Genetics·Hannele Lindqvist-KreuzeMerideth Bonierbale
Mar 1, 2017·The Plant Journal : for Cell and Molecular Biology·Miaomiao ZhangRongling Wu
Jun 2, 2017·Frontiers in Plant Science·Yiwei JiangDavid F Garvin
Jul 3, 2021·International Journal of Molecular Sciences·Christina SchumacherRenate Horn

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