Quantitative Trait Loci (QTL) analysis and mapping of female and male fertility genes in an interspecific cross of tomato (Lycopersicon esculentum Mill. X Lycopersicon pimpinellifolium (Jusl.) Mill.).
Date
4-2006
Degree
Bachelor of Science in Biology
College
College of Arts and Sciences (CAS)
Adviser/Committee Chair
Merlyn S. Mendioro
Abstract
Quantitative traits related to female fertility were mapped on the chromosomes of the recombinant inbred lines of a cross between cultivated tomato (Lycopersicon esculent= Mill.) and currant tomato (Lycopersicon (Jusl.) Mill.). Morphological characteristics related to fertility were observed. Most of the fertility traits observed have values near that of L. pimpinellifolium parent. At a<0.05, a significant weak association was observed for pollen number and number of seeds per fruit. On the other hand, at a<0.01, very weak associations were detected for fruit weight and stigma exertion; and fruit weight and pollen number. Forty-one Simple Sequence Repeats (SSR) markers and two Single Nucleotide Polymorphism (SNP) markers were used to saturate the previous genetic map for the LAl269 RILs. A total of sixteen markers (14 SSR and 2 SNP) were incorporated into the genetic map of the same population. The phenotypic and genotypic data gathered were used in the QTL analysis. A total of 11 QTLs related with fertility with LOD scores greater than 2.0 was detected. These include the following: one fruit weight QTL which is located at chromosome 7; one for pollen number at chromosome 11; four for pollen viability at chromosomes 4, 5, 6, and 9; two for number of seeds per fruit both at chromosome 3; one for number of flowers per inflorescence at chromosome 8; and two for stigma exertion at chromosomes 6 and 8.
Language
English
Location
UPLB Main Library Special Collections Section (USCS)
Call Number
Thesis
Recommended Citation
Azañes, Mia Desiree C., "Quantitative Trait Loci (QTL) analysis and mapping of female and male fertility genes in an interspecific cross of tomato (Lycopersicon esculentum Mill. X Lycopersicon pimpinellifolium (Jusl.) Mill.)." (2006). Undergraduate Theses. 10675.
https://www.ukdr.uplb.edu.ph/etd-undergrad/10675
Document Type
Thesis