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QTL analysis of fruit color and esti...

Sooriyapathirana, Suneth Sithumini.

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QTL analysis of fruit color and estimation of genetic diversity using DNA markers in sweet cherry (Prunus avium L.).

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	QTL analysis of fruit color and estimation of genetic diversity using DNA markers in sweet cherry (Prunus avium L.)./
作者:	Sooriyapathirana, Suneth Sithumini.
面頁冊數:	160 p.
附註:	Source: Dissertation Abstracts International, Volume: 70-10, Section: B, page: 5966.
Contained By:	Dissertation Abstracts International70-10B.
標題:	Biology, Molecular. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3381365
ISBN:	9781109417609

QTL analysis of fruit color and estimation of genetic diversity using DNA markers in sweet cherry (Prunus avium L.).
Sooriyapathirana, Suneth Sithumini.

QTL analysis of fruit color and estimation of genetic diversity using DNA markers in sweet cherry (Prunus avium L.). - 160 p.

Source: Dissertation Abstracts International, Volume: 70-10, Section: B, page: 5966.

Thesis (Ph.D.)--Michigan State University, 2009.

Fruit color is an important indicator of sweet cherry fruit maturity and distinguishes two major market classes, e.g. yellow skin and fruit with a pink blush on the skin, and dark mahogany colored skin and flesh. Yet, within these extremes, there is a continuum of flesh and skin color types. The genetic control of skin and flesh color in sweet cherry was investigated using a QTL approach with a population derived from a cross between parents representing the two color extremes. Skin and flesh colors were measured from the progeny using a qualitative color card rating in 2006, 2007 and 2008. In 2008, color was also evaluated quantitatively for lightness (L*), redness (a*), and yellowness (b*). The skin and flesh color card ratings for the three years were significantly correlated (P<0.0001) and therefore only the 2008 data were used in the genetic analyses. Progeny segregations for the color measurements (card, L*, a*, b*) did not fit normal distributions; instead the distributions were skewed towards the skin color of the dark-skinned parent. A major QTL for skin and flesh color was identified on Linkage Group (LG) 3 and three other QTLs for skin and flesh color were identified on LG5, LG6 and LG8. However, the consistent significance of the QTL identified on LG3 suggests the presence of a major regulatory gene for fruit color development.

ISBN: 9781109417609Subjects--Topical Terms:

1017719
Biology, Molecular.

QTL analysis of fruit color and estimation of genetic diversity using DNA markers in sweet cherry (Prunus avium L.).
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300 $a 160 p.
500 $a Source: Dissertation Abstracts International, Volume: 70-10, Section: B, page: 5966.
500 $a Adviser: Amy F. Iezzoni.
502 $a Thesis (Ph.D.)--Michigan State University, 2009.
520 $a Fruit color is an important indicator of sweet cherry fruit maturity and distinguishes two major market classes, e.g. yellow skin and fruit with a pink blush on the skin, and dark mahogany colored skin and flesh. Yet, within these extremes, there is a continuum of flesh and skin color types. The genetic control of skin and flesh color in sweet cherry was investigated using a QTL approach with a population derived from a cross between parents representing the two color extremes. Skin and flesh colors were measured from the progeny using a qualitative color card rating in 2006, 2007 and 2008. In 2008, color was also evaluated quantitatively for lightness (L*), redness (a*), and yellowness (b*). The skin and flesh color card ratings for the three years were significantly correlated (P<0.0001) and therefore only the 2008 data were used in the genetic analyses. Progeny segregations for the color measurements (card, L*, a*, b*) did not fit normal distributions; instead the distributions were skewed towards the skin color of the dark-skinned parent. A major QTL for skin and flesh color was identified on Linkage Group (LG) 3 and three other QTLs for skin and flesh color were identified on LG5, LG6 and LG8. However, the consistent significance of the QTL identified on LG3 suggests the presence of a major regulatory gene for fruit color development.
520 $a The genetic diversity of sweet cherry (Prunus avium L.) germplasm historically used in the breeding programs of Pacific North West region in North America was studied in comparison to a subset of European sweet cherry landraces and a wild cherry (P. avium) selection to test the hypothesis of genetic founder effect that occurred when early settlers brought selected subset of sweet cherry germplasm from Europe to the New World. Pacific North West sweet cherry germplasm was defined as a set of 28 landraces, parents and released cultivars. A subset of seven European sweet cherry landraces and a single wild cherry selection were used for the comparison. The genotypic data for all 36 sweet cherry selections were recorded for 77 DNA markers. A total of 300 alleles were detected for 77 markers with an average of four alleles per locus. A total of 52 unique alleles were identified and 40 of them were not present in the Pacific North West sweet cherry germplasm. The 50% of the total alleles detected were rare alleles and 30% of the total rare alleles were not detected in the Pacific North West sweet cherry germplasm. The European landraces were distantly related at 25% of genetic dissimilarity value but Pacific North West sweet cherry parents and cultivars were separated only at 8% of genetic dissimilarity value showing the low level of diversity compared to European sweet cherry landraces and the wild cherry selection. This study shows that Pacific North West sweet cherry germplasm had been subjected to genetic founder effect and implies that the introduction of new germplasm from Europe is necessary to broaden the genetic diversity in the Pacific North West sweet cherry germplasm.
590 $a School code: 0128.
650 4 $a Biology, Molecular. $3 1017719
650 4 $a Biology, Genetics. $3 1017730
650 4 $a Agriculture, Horticulture. $3 1017832
650 4 $a Agriculture, Plant Culture. $3 1018669
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