Strategy for the construction of a core collection for Pinus yunnanensis Franch. to optimize timber based on combined phenotype and molecular marker data

2021 ◽  
Author(s):  
Xiaoli Wang ◽  
Zilin Cao ◽  
Chengjie Gao ◽  
Kun Li
Keyword(s):  
Molecular Marker ◽  
Core Collection ◽  
Marker Data ◽  
Pinus Yunnanensis

Construction of Sugarcane Hybrids Core Collection by Using Stepwise Clus-tering Sampling Approach with Molecular Marker Data

2014 ◽  
Vol 40 (11) ◽  
pp. 1885 ◽  
Author(s):  
Xin-Long LIU ◽  
Hong-Bo LIU ◽  
Li MA ◽  
Xu-Juan LI ◽  
Chao-Hua XU ◽  
...  
Keyword(s):  
Molecular Marker ◽  
Core Collection ◽  
Marker Data ◽  
Sugarcane Hybrids ◽  
Sampling Approach

scholarly journals Screening of the Argentinean INTA peanut core collection with a molecular marker associated with resistance to Sclerotinia minor Jaggar

2020 ◽  
Vol 47 (1) ◽  
pp. 9-16
Author(s):  
K.D. Chamberlin ◽  
J.J. Baldessari ◽  
E.M.C. Mamani ◽  
M.V. Moreno
Keyword(s):  
Molecular Marker ◽  
Core Collection ◽  
Field Tests ◽  
Field Testing ◽  
Blight Resistance ◽  
Phenotypic Traits ◽  
Sources Of Resistance ◽  
Sclerotinia Minor ◽  
Sclerotinia Blight ◽  
Potential Sources

ABSTRACT Cultivated peanut, the third most important oilseed in the world, is consistently threatened by various diseases and pests. Sclerotinia minor Jagger (S. minor), the causal agent of Sclerotinia blight, is a major threat to peanut production in many countries and can reduce yield by up to 50% in severely infested fields. Host plant resistance will provide the most effective solution to managing Sclerotinia blight, but limited sources of resistance to the disease are available for use in breeding programs. Peanut germplasm collections are available for exploration and identification of new sources of resistance, but traditionally the process is lengthy, requiring years of field testing before those potential sources can be identified. Molecular markers associated with phenotypic traits can speed up the screening of germplasm accessions. The objective of this study was to genotype the peanut core collection of the Instituto Nacional de Tecnología Agropecuaria (INTA) Manfredi, Argentina, with a molecular marker associated with Sclerotinia blight resistance. One hundred and fifty-four (154) accessions from the collection were available and genotyped using the Simple Sequence Repeat (SSR) marker. Accessions from each botanical variety type represented in the core collection were identified as new potential sources of resistance and targeted for further evaluation in field tests for Sclerotinia blight resistance.

Estimation of sampling variance of molecular marker data using the bootstrap procedure

1994 ◽  
Vol 89-89 (2-3) ◽  
pp. 259-264 ◽  
Author(s):  
J. G. Tivang ◽  
J. Nienhuis ◽  
O. S. Smith
Keyword(s):  
Molecular Marker ◽  
Sampling Variance ◽  
Bootstrap Procedure ◽  
Marker Data

scholarly journals 552 Comparison of Genetic Diversity in between Two Germplasm Banks Containing Lycopersicon esculentum Accessions

HortScience ◽  
2000 ◽  
Vol 35 (3) ◽  
pp. 491A-491
Author(s):  
James Nienhuis ◽  
Julie Rodriguez ◽  
Wilber Phillips ◽  
Peter Hanson ◽  
Liliway Engle
Keyword(s):  
Genetic Diversity ◽  
Costa Rica ◽  
Lycopersicon Esculentum ◽  
Molecular Marker ◽  
Research And Development ◽  
Genetic Resources ◽  
Core Collection ◽  
Germplasm Bank ◽  
Development Center ◽  
Germplasm Banks

Worldwide, there are cuurently more than 60 germplasm banks that contain tomato (Lycopersicon esculentum) collections ranging is size from a few dozen to several thousands of accessions. In the utilization of these genetic resources sampling from only one germplasm bank may result in limiting available genetic diversity, whereas sampling from several germplasm banks may result in unnecessary redundancy. The current lack of knowledge regarding the relative magnitudes of genetic diversity contained within different collections makes it difficult to develop a core collection that maximizes genetic diversity. Two large tomato collections are housed at the Asian Vegetable Research and Development Center (AVRDC), Sanhua, Taiwan, R.O.C., and the Centro Agronomico Tropical de Investigacion y Enseoanza (CATIE), Turrialba, Costa Rica. Ninety-six accessions from CATIE and 102 accessions from AVRDC were randomly sampled from each base collection. The total of 198 accessions were charcterized for 103 polymorphic RAPD molecular marker bands. The results indicated that the two germplam banks sampled different genetic diversity. In addition, the magnitude of genetic diversity was greater in the AVRDC collection compared to CATIE.

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