Identification of quantitative trait loci for flowering time in a Camelina biparental population developed from winter- and spring-type parents

作者：Jinita Sthapit Kandel, Zahirul I. Talukder, TM Shaikh, David P. Horvath, Xuehui Li, James V. Anderson · 发表于：Industrial Crops and Products · 年份：2024 · DOI：10.1016/j.indcrop.2024.119259 · 被引用次数：3 · 研究领域：Lipid metabolism and biosynthesis、Genetic Mapping and Diversity in Plants and Animals、Research in Cotton Cultivation

Camelina [Camelina sativa (L.) Crantz] is an annual oilseed crop from the Brassicaceae family. Camelina consists of both spring and winter biotypes with winter biotypes having exceptionally low temperature tolerance. Winter-hardy crops, such as camelina, can be planted in the fall and harvested early in the summer allowing for double- and relay-cropping options in the northern Great Plains of the USA. To enhance double- and relay-cropping systems, early maturing varieties of camelina are desired. The objectives of this study were to evaluate variation in flowering time and identify quantitative trait loci (QTL) in a biparental camelina population developed from crossing a winter (Joelle) and a spring (C046) biotype. An F7 recombinant inbred line (RIL) population consisting of 254 individuals was phenotyped for days to flowering (DTF) under greenhouse conditions after treatment with or without 8-weeks of vernalization. Variation in DTF among two experiments (Exp) was observed in the RIL population and average DTF for non-vernalized plants were 54.6 and 58.1 days after planting (DAP) (Exp 1 and 2 respectively) and 89 and 90.1 DAP in vernalized plants. Broad-sense heritability estimate of DTF across two experiments was 0.79 with and 0.96 without vernalization. The RIL population was genotyped with 2412 SNP markers to create a linkage map and perform QTL analysis. The map consisted of 20 linkage groups representing the 20 chromosomes (Chr) of C. sativa. The QTL analysis of DTF wi...