NDLI: Development of elite rice restorer lines in the genetic background of R022 possessing tolerance to brown planthopper, stem borer, leaf folder and herbicide through marker-assisted breeding

Content Provider	Springer Nature Link
Author	Wan, Bingliang Zha, Zhongping Li, Jinbo Xia, Mingyuan Du, Xueshu Lin, Yongjun Yin, Desuo
Copyright Year	2013
Abstract	Rice leaf folder, stem borer and brown planthopper (BPH) are the most devastating rice insect pests. Developing and planting insect-resistant rice varieties is the most economical and effective measure for controlling these pests. BPH can be controlled with native BPH-resistance genes in rice, while at present rice leaf folder and stem borer can only be controlled through planting transgenic Bt rice. In this study, the breeding of a new restorer line KR022 possessing stacked BPH-resistance genes Bph14 and Bph15, Bt gene cry1C and glufosinate-resistance gene bar, is reported for the first time. A rice restorer line R022 with BPH-resistance genes Bph14 and Bph15 was used as a recurrent parent to cross with the transgenic rice T1C-19 of cry1C and bar genes during the breeding process. The restorer line KR022 was developed from the backcross populations of R022 and T1C-19 through molecular marker-assisted selection and glufosinate-resistance selection. The cry1C and bar genes were found to integrate on chromosome 11 of KR022, and the genome recovery of KR022 was up to 95.8 % of the R022 genome. The quantification of Cry1C protein expression showed that it was expressed at different levels in the leaf, stem, panicle, endosperm, and root of KR022 and its hybrid rice. The insect-resistance evaluation indicated that KR022 and its hybrid rice had good resistance to rice leaf folder and stem borer, both in laboratory settings and in the field. Furthermore, they exhibited increased resistance to BPH at both the seedling and mature stage. The field trial showed there was no significant difference in key agronomic traits between KR022 and its recurrent parent R022, and four hybrids from KR022 yield much higher than the control II-You 838. Moreover, KR022 and its hybrid rice were found to have resistance to the herbicide glufosinate. These results demonstrate that KR022 is effective as a rice restorer line for the breeding of “green super rice”, possessing multiple tolerances to rice BPH, stem borer, leaf folder and glufosinate.
Starting Page	129
Ending Page	142
Page Count	14
File Format	PDF
ISSN	00142336
Journal	Euphytica
Volume Number	195
Issue Number	1
e-ISSN	15735060
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-08-14
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	bar Bph14/Bph15 cry1C Leaf folder resistance Stem borer resistance Oryza sativa L. Plant Sciences Plant Genetics & Genomics Plant Pathology Plant Physiology Biotechnology
Content Type	Text
Resource Type	Article
Subject	Genetics Plant Science Horticulture Agronomy and Crop Science

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Antibiosis Effects of Rice Carrying Bph14 and Bph15 on the Brown Planthopper, Nilaparvatalugens

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