Document Details
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Document Type |
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Thesis |
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Document Title |
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BREEDING AND QTL MAPPING FOR SOME FRUIT QUALITY TRAITS OF INTER/INTRA-SPECIFIC F2 TOMATO (Lycopersicun esculentum MILL.) التربية وتحديد مواقع الصفات الكمية لبعض صفات وجودة الثمار في عشيرة الجيل الثاني من الطماطم |
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Subject |
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Faculty of Meteorology, Environment and Arid Land Agriculture |
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Document Language |
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Arabic |
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Abstract |
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The field experiment of the presented study was conducted in the Agriculture Research Station at King Abdulaziz University. Fruit analysis was conducted in the lab. of postharvest physiology and technology, Department of Arid Land Agriculture, King ABdulaziz University. This aimed to study the genetic improvement of fruit quality and associated yield and growth traits using F2 population derived from the intra-specific cross ‘LA1421 x LA 2711”. LA2711 was used as female parent (Lycopersicun esculentum, LA 2711, TGRC). LA2711 had high growth vigor, medium yield, big fruits and considered as a salinity tolerance. The fruits of LA2711 are soft, high TSS and misshaped (not uniform). The donor parent LA1421 (Lycopersicun esculentum,var cerosiforme LA 1421, TGRC cherry type tomato relatively wild type ) had uniform fruit, compact fruits, high lycopine contents, long shelf life fruits with small size fruit. The LA1421 produce medium yield of small size fruits. Sex generations of tomato P1(LA1421), P2 (LA2711), F1 and BC1, F2, and BC2 were used. Data were analyzed using six generation model to estimate gene effects (d=additive, h=dominance, i=additive x additive, j=additive x dominance and l=dominance x dominance, narrow sense and broad sense heritability). The results revealed that between the influential additive, dominance and epistasis effects, the “additive gene” showed positive and priority effect compare to “dominance gene “on almost assessed traits. Quantitative and qualitative measured for comparing of the F2 population vs. LA 2711 for the quality characters for fruit analysis and quality parameters. The results illustrated that significant improvement in F2 population compare to P1 LA2711 was recorded including no. of branches per plant (41.66%), number of cluster per plant (1.13%) and yield/plant (13.81 %), pH (6.01%), vitamin ‘C’ (8.46%), total soluble solids contents (17.95), fruit firmness (23.17%). Regarding fruit uniformity the results revealed that the percentage of improvement of fruits uniformity in F2 was 49.26% as compared to P1 (LA2711). The effect of additive gene action found highly significant. The dominant effects were insignificant. The additive x additive and dominant x dominant effects were insignificant on plant height. As presented in Table (24) the broad sense heritability for plant height (cm) of the F2 was 19.8%, while the narrow sense heritability was 0.428. Moreover, the phenotypic variance (111.6%) was higher than genotypic (105.6%) and environmental variance (5.9%). As a conclusion the range of uniformity fruits in F2 population was different and recorded (62.4%),the ratio of fruit uniformity into deform fruit is 2.5:1 , and shows a great polymorphic variation in a F2 population that is a great success of fruit uniformity for selection purpose and research goal. |
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Supervisor |
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Dr. Magdi A. A. Mousa |
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Thesis Type |
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Doctorate Thesis |
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Publishing Year |
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1438 AH
2017 AD |
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Co-Supervisor |
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Prof. Adel D. AL-Qurashi |
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Added Date |
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Thursday, June 15, 2017 |
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Researchers
| زين الله حازم | Hazim, Zainullah | Researcher | Doctorate | |
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