Relationships between Coefficient of Parentage and Genetic Distance Based on DNA Polymorphism in Barley Cultivars

To understand the genetic diversity of rice cultivars and to establish a breeding system to accumulate superior traits, we performed pedigree analysis of the varieties bred for over 80 years in Hokuriku National Agricultural Experiment Station(143 varieties). The total number of ancestors increased from 1980s and doubled during the last 10 years, and the number of lines in the yield test was 1122. The Hokuriku lines had only a few ancestors. The average of the coeffi cient of parentage between Koshihikari and the 16 Hokuriku Lines used for the yield test was 0.463. The coeffi cients of parentage between Koshihikari and these 16 Hokuriku Lines were not signifi cantly correlated with eating quality. Since 86 of the breeding lines in the yield test (44 lines) were progeny of Kinuhikari, Kinuhikari descended from Koshihikari was considered to have contributed to improvement of eating quality in rice breeding.

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Pedigree Analysis of Rice Bred in Hokuriku Research Center

Shigemune

Miura

Sasahara

et al. 2006

Japanese journal of crop science

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Ｒａｐｄ分析による栃木県を中心とした関東周辺地域のムギ類優良品種識別

Kobayashi

Yoshida

2006

Japanese journal of crop science

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コムギおよびオオムギにおける家系図から計算した近縁係数と分子マーカーから推定した遺伝的距離との関係

Kobayashi

Yoshida

2006

Japanese journal of crop science

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In breeding, understanding of the genetic background is effective for effi cient improvement. The coeffi cients of parental correlation between the main cultivars of wheat and between those of barley in the Kanto Region were calculated based on their pedigree record. The number of same DNA markers in random amplifi ed polymorphic DNA (RAPD) analysis and Nei's genetic distance between these cultivars were also calculated. The coeffi cient of correlation between the parental correlation and the number of the same DNA markers was 0.581 0.904 in wheat and 0.731 0.805 in barley. The coeffi cient of correlation between the parental correlation and Nei's genetic distance was 0.511 0.892 in wheat and 0.659 0.770 in barley. These results show that the genetic codes detected by the molecular markers were neary equally distributed to the offspring in the breeding process in wheat and barley. The results also showed that although the DNA markers in RAPD analysis are useful, the rapid estimate of kinship by the parental correlation is still effective. The number of the same DNA markers in RAPD analysis was highly correlated with Nei's genetic distance.

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Relationships between Coefficient of Parentage and Genetic Distance Based on DNA Polymorphism in Barley Cultivars

Cited by 7 publications

References 8 publications

Pedigree Analysis of Rice Bred in Hokuriku Research Center

Pedigree Analysis of Rice Bred in Hokuriku Research Center

Ｒａｐｄ分析による栃木県を中心とした関東周辺地域のムギ類優良品種識別

コムギおよびオオムギにおける家系図から計算した近縁係数と分子マーカーから推定した遺伝的距離との関係

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