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Studies on Transfer of Bacterial Blight Resistant Genes of Indica–Japonica Crosses in O ryzae sativa L
Author(s) -
Zhang Xiaoming,
Zhen Rou,
Xi Yong'an,
Fang Jianglin
Publication year - 1996
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/(sici)1097-0010(199601)70:1<102::aid-jsfa468>3.0.co;2-c
Subject(s) - japonica , biology , japonica rice , panicle , blight , stamen , horticulture , botany , pollen
A rice ( Oryzae sativa L) indica bacterial blight (BB) resistant variety DV85 was crossed with japonica wide compatibility varieties (WCVs), and results showed that their compatibilities were very poor and the resistant genes in F 2 significantly biased away from normal segregated values by the χ 2 test at the 1% level. This distorted segregation was not related to spikelet fertility, panicle length, grains per panicle and 1000‐grain weight by correlation analyses. Four resistant derived lines to BB have been obtained by an anther culture technique. ZD92147 was resistant to Chinese races 1, 3, 4 and Philippine races 1–5 and moderately resistant to Chinese races 2, 5 and Philippine race 6. ZD92152 was resistant to Chinese races 1, 4, Philippine races 1, 2, 3, 5 and moderately resistant to Chinese races 2, 3 and Philippine races 4 and 6. Their resistances equalled or exceeded the level of DV85 and were much better than check variety ‘Xiushui 11’. The F 2 of japonica‐biased resistant plants of japonica WCVs×DV85 was anther cultured, and results showed that it is a more convenient and effective breeding method than ordinary breeding methods to transfer BB resistant genes in wide crosses. The four derived lines indica–japonica behaviours were also studied. ZD92147 and ZD92149 belong to japonica, ZD92150 belongs to the indica–japonica middle type, while ZD92152 belongs to indica.