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Phenotypic Diversity Among Peach and...

Vidstrand, Anders.

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Phenotypic Diversity Among Peach and Nectarine (Prunus persica (L.) Batsch) Fruit in the National Prunus Collection at the USDA-ARS, National Clonal Germplasm Repository (NCGR).

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Phenotypic Diversity Among Peach and Nectarine (Prunus persica (L.) Batsch) Fruit in the National Prunus Collection at the USDA-ARS, National Clonal Germplasm Repository (NCGR)./
作者:	Vidstrand, Anders.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2017,
面頁冊數:	118 p.
附註:	Source: Masters Abstracts International, Volume: 57-05.
Contained By:	Masters Abstracts International57-05(E).
標題:	Horticulture. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10682298
ISBN:	9780355764222

Phenotypic Diversity Among Peach and Nectarine (Prunus persica (L.) Batsch) Fruit in the National Prunus Collection at the USDA-ARS, National Clonal Germplasm Repository (NCGR).
Vidstrand, Anders.

Phenotypic Diversity Among Peach and Nectarine (Prunus persica (L.) Batsch) Fruit in the National Prunus Collection at the USDA-ARS, National Clonal Germplasm Repository (NCGR). - Ann Arbor : ProQuest Dissertations & Theses, 2017 - 118 p.

Source: Masters Abstracts International, Volume: 57-05.

Thesis (M.S.)--University of California, Davis, 2017.

The diversity and relationships of fruit quality traits of peach and nectarine (Prunus persica (L.) Batsch) genotypes in the National Prunus collection were studied using comprehensive phenotyping methods. The collection was re-propagated in 2013 and planted in 2014 and provided a unique opportunity to evaluate an even-aged, bearing population with extensive genetic diversity. This population consisted of 538 accessions of which 352 unique genotypes had adequate crop yield for complete data collection. These unique genotypes came from diverse global lineages (breeders' lines, Western cultivars, Asian cultivars, and wild germplasm). Comprehensive phenotyping methods were used, including electronic data capture and standard protocols. Mature fruit were harvested from two replicates of each genotype, and analyzed when tree ripe for all physical and chemical traits. Traits were measured on ten fruit per replicate of each genotype with mean values from five fruit for each trait used for chemical analysis. Traits evaluated included physical parameters (fruit weight, size, flesh color, percentage red overlay, percentage blush, firmness, type, shape, endocarp adhesion, amount of fuzz, and flesh texture), and chemical parameters (soluble solids concentration (SSC), titratable acidity (TA), SSC/titratable acidity ratio (SSC/TA ratio), and pH). Phenological traits were also recorded, including: full bloom date, leaf-out date, fruit maturity date, and fruit development period (days from full bloom date to maturity date). Unique combinations of flesh color, percentage red overlay, percentage blush, and fruit type were observed. Fruit maturity dates ranged from May to October, with fruit development periods from as short as 67 days to as long as 230 days with a mean of 134 days. Soluble solids ranged from as low as 6.2 SSC to as high as 20.1 SSC with a mean of 13.4 SSC. Titratable acidity ranged from 0.14% to 2.1% with a mean of 0.64%. The SSC/titratable acidity ratio (SSC/TA ratio) ranged from 6.5 to 132.8 with a mean of 26.8. Numerous correlations among fruit quality and phenological traits across diverse lineages were observed. This study of phenotypic diversity of the NCGR Prunus collection provides invaluable information to researchers who use these genetics. Further studies combining these phenotypic data and additional genotype by sequencing data from the same collection will focus on a genome-wide association study. Full data and photographs will also be published on the GRIN-Global Project.

ISBN: 9780355764222Subjects--Topical Terms:

555447
Horticulture.

Phenotypic Diversity Among Peach and Nectarine (Prunus persica (L.) Batsch) Fruit in the National Prunus Collection at the USDA-ARS, National Clonal Germplasm Repository (NCGR).
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