QTL Analysis of Date of Initial Flowering，Main Stalk Length and Seed Weight per Plant in Carrot

doi:10.16420/j.issn.0513-353x.2017-0830

ACTA HORTICULTURAE SINICA ›› 2018, Vol. 45 ›› Issue (3): 571-578.doi: 10.16420/j.issn.0513-353x.2017-0830

• Research Notes • Previous Articles Next Articles

QTL Analysis of Date of Initial Flowering，Main Stalk Length and Seed Weight per Plant in Carrot

SHEN Qi1，OU Chenggang1，SUN Tingting1，LIU Bo1，CAO Qiongwen1，ZHAO Zhiwei1，KONG Xiaoping2,*，and ZHUANG Feiyun1,2,*

Xiaoping2,*，and ZHUANG Feiyun1,2,* （1The Institute of Vegetables and Flowers，Chinese Academy of Agricultural Sciences，Key Laboratory of Horticultural Crop Biology and Germplasm Innovation，Ministry of Agriculture，Beijing 100081，China；2Institue of Xining Vegetables，Xining 810000，China）

Online:2018-03-25 Published:2018-03-25

Abstract

Abstract: A set of backcross inbred lines（BILs）crossed by a wild carrot species‘Songzi’with an orange cultivar‘Amsterdam’were used to deeply analyze the genetic influence of‘Songzi’chromosome fragments on date of initial flowering（DIF），main stalk length（MSL），and seed weight per plant（SWP）. The experimental results suggested that MSL was normal distributed in 2014 and 2015，but DIF was on the contrary，and that SWP was only normal distributed in 2015. ANOVA analysis indicated that there was significant difference among BILs genotypes，years，and genotypes × years. Based on the last carrot genome resequencing data，a genetic map consisted of 2 027 Bins and 154 776 SNPs was developed，and the total genetic distance was 1 436.433 cM with an average interval of 0.709 cM between Bin markers. Two，four and two QTLs associated with DIF，MSL and SWP were discovered，respectively，with 14.6%–23.8% phenotypic variance. DIF5-1 locus was overlapped with MSL5-1 locus.

Key words: carrot, BIL, date of initial flowering, main stalk length, seed weight, QTL

CLC Number:

S 631.2

SHEN Qi1，OU Chenggang1，SUN Tingting1，LIU Bo1，CAO Qiongwen1，ZHAO Zhiwei1，KONG Xiaoping2,*，and ZHUANG Feiyun1,2,*. QTL Analysis of Date of Initial Flowering，Main Stalk Length and Seed Weight per Plant in Carrot[J]. ACTA HORTICULTURAE SINICA, 2018, 45(3): 571-578.

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QTL Analysis of Date of Initial Flowering，Main Stalk Length and Seed Weight per Plant in Carrot

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