Genetic analysis of leaffolder resistance in rice

Yuchun Rao^{a, b, #},
Guojun Dong^{a, b, #},
Dali Zeng^{a
, ,},
Jiang Hu^a,
Longjun Zeng^a,
Zhengyu Gao^a,
Guanghen Zhang^a,
Longbiao Guo^a,
Qian Qian^{a
, ,}

a.
State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China
b.
Graduate School of Chinese Academy of Agriculture Science, Beijing 100081, China

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Corresponding author: E-mail address: qianqian188@hotmail.com (Dali Zeng); E-mail address: dalizeng@126.com (Qian Qian)

These authors contributed equally to this work.

摘要

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Abstract: A double haploid (DH) population, which consists of 120 lines derived from anther culture of a typical indica and japonica hybrid ‘CJ06’/‘TN1’, was used to investigate the genetic basis for rice leaffolder resistance. Using a constructed molecular linkage map, five QTLs for rolled leaves were detected on chromosomes 1, 2, 3, 4, and 8. The positive alleles from CJ06 on chromosomes 3, 4, and 8 increased the resistance to rice leaffolder, and the alleles from TN1 on chromosomes 1 and 2 also enhanced resistance to leaffolder. The interactions between QTLs were identified and tested, and four conditional interactions were acquired for resistance to rice leaffolder. These loci were located on chromosomes 2, 9, 10, and 11, respectively. QTL pyramiding indicated that the positive alleles affect resistance to leaffolder. The prospective application of this data in rice breeding was also discussed.
- rice (Oryza sativa L.) /
- rice leaffolder /
- QTL analysis /
- conditional interaction
These authors contributed equally to this work.
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