Phenotype and Genotype Interaction Underlying Distributive Characteristic for Awn Development in Rice

Plants

卷:11

Jae-Ryoung Park¹  Eun-Gyeong Kim²  Yoon-Hee Jang²  Kyung-Min Kim²  Ju Hyeong Son²  Byoung-Ju Yun³ 

[1] Crop Breeding Division, National Institute of Crop Science, Rural Development Administration, Wanju 55365, Korea;

[2] Division of Plant Biosciences, School of Applied Biosciences, College of Agriculture and Life Sciences, Kyungpook National University, Daegu 41566, Korea;

[3] School of Electronic and Electrical Engineering, College of IT Engineering, Kyungpook National University, 80, Daehak-ro, Buk-gu, Daegu 41566, Korea;

关键词: awn;    rice;    breeding;    QTL;    agricultural;   

DOI  :  10.3390/plants11070851

来源: DOAJ

【 摘 要 】

As a wild ancestor of cultivated rice, Oryza rufipogon is domesticated into cultivated rice Oryza sativa, many agricultural traits are newly created or disappear. In particular, in wild rice, awn protects from predators and is easily blown by the wind and used as a means of propagation. However, awns gradually disappeared as they were breeding from wild rice to cultivated rice. Since awn development is disadvantageous to rice yield, it is important to understand the genetic basis related to awn development. In addition, characterization of the genes associated with awn development is helpful in analyzing the genetic relationships of rice from ancient times to the present for the regulatory mechanisms of awn formation. QTL analysis identified RM14330-RM218 on chromosome 3 using a 120 Cheongcheong/Nagdong double haploid population. Through screening of genes related to awn development in RM-14330-RM218, it is indicated that OsDRPq3 is a causal gene that can be involved in awn development. OsDRPq3 transcription level is maintained high in long awn and less yield populations during the panicle formation stage, the period during awn development. Moreover, the sequence of OsDRPq3 has high homology with the drooping protein leaf. This study provides a new resource for phylogenetic research of rice and exploration of awn development.

【 授权许可】

Unknown