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Chinese Agricultural Science Bulletin ›› 2021, Vol. 37 ›› Issue (19): 1-12.doi: 10.11924/j.issn.1000-6850.casb2020-0148

Special Issue: 水稻

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Analysis of Pedigree and Agronomic Characters of Japonica Rice Cultivars by Anther Culture Breeding in Heilongjiang Province

Liu Baohai(), Gao Shiwei, Tang Ming, Men Longnan, Liu Yuqiang, Nie Shoujun, Liu Qing, Chang Huilin, Ma Cheng, Xue Yinghui, Bai Rui, Wang Hongbin   

  1. Suihua Branch of Heilongjiang Academy of Agricultural Sciences, Suihua Heilongjiang 152052
  • Received:2020-06-04 Revised:2021-04-22 Online:2021-07-05 Published:2021-07-29

Abstract:

To investigate the comprehensive characteristics of pedigree and agronomic characters of Japonica rice cultivars by anther culture breeding, we investigated 15 agronomic characters of 22 cultivars and genetic parents which were bred by anther culture in Heilongjiang Province from 1975 to 2019, to analyze the genetic coefficients and main agronomic characters comparatively with covariance, correlation, multiple comparison and clustering methods. The results show that anther culture breeding technology has obtained remarkable achievement in Heilongjiang Province, whereas there are still much potential for its popularization and application. Furthermore, the genetically related variety combinations account for only 4.8% of the 231 combinations, with large genetic differences and high levels of genetic diversity. Meanwhile, five germplasms, ‘Longjingxiang 1’, ‘Longjing 45’, ‘Longjing 3767’, ‘Longjing 4’ and ‘Longjing 7’ are selected as core parent germplasm. Based on the stable improvement of yield, gel consistency, grain number per spike, brown rice rate, eating quality and chalkiness rate, the targets of anther culture breeding in Heilongjiang are clarified to enhance seed setting rate, rate of head rice and spike length, and to decrease plant height, rate of chalkiness rice, protein content, amylose content and neck blast. The study could provide theoretical reference for the anther culture breeding technology extension, germplasm utilization and variety selection in Heilongjiang Province.

Key words: Heilongjiang Province, anther culture breeding, pedigree, agronomic characters, Japonica rice

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