Acta Agriculturae Boreali-Sinica

ACTA AGRICULTURAE BOREALI-SINICA ›› 1997, Vol. 12 ›› Issue (4): 7-12. doi: 10.3321/j.issn:1000-7091.1997.04.002

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Analysis of Combining Ability and F1 Heterosis of Photoperiod Sensitive Genic Malesterile Lines of Keng Rice

Feng Ruiguang1, Meng Lingqi1, Ning Wenshu1, Meng Xiangzhen1, Wang Yuzhen1, Wang Zhenqi1, Li Ronggai1   

  1. 1. Scientific Reserch Institute of Land Reclamation of Hebei Province, Tanghai 06320
    0.
    2. Scientific Research Institute of Tanghai County, Tanghai 063201
  • Received:1996-01-04 Published:1997-12-28

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Abstract: Four Photoperiod sensitive genic male sterile lines of Keng rice and 8 restoring lines were used to make a 4∗8 incomplete diallel crosses. The heterosis and the combining ability of 9 main agronomic traits were analysed .The results were as follows: the characters of hybrid rice were main influenced by the GCA of parents. The heterosis could be predicted with GCA of its parents. The GCA of 91 32s in four PGMSR was the hightest, while the restoring lines C8420,9022 and 92016 had high GCA values in the most traits. The best combination for grain weight per plant was 91 32s/C8420 and 91 32s/92016,yield of the two hybrids increased 56.57% and 51.81% comparing with "Jikeng 8" used in production.

Key words: Rice, Photoperiodsensitive malesterile line, Combining ability, Heterosis

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Feng Ruiguang, Meng Lingqi, Ning Wenshu, Meng Xiangzhen, Wang Yuzhen, Wang Zhenqi, Li Ronggai. Analysis of Combining Ability and F1 Heterosis of Photoperiod Sensitive Genic Malesterile Lines of Keng Rice[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1997, 12(4): 7-12. doi: 10.3321/j.issn:1000-7091.1997.04.002.

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