Received: 30-05-2018
Accepted: 21-09-2018
DOI:
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Genetic Diversity and Combining Ability for Fruit Yield and Quality of Some Muskmelon (Cucumis meloL.) Lines
,
Pham Quang Tuan
1
,
Vu Van Liet
2
,
Nguyen Trung Duc
1
,
Doan Thi Yen
1
Keywords
Cucumis melo, genetic diversity, combining ability, diallel cross
Abstract
This study was carried out to analyze the genetic diversity among 30 muskmelon (Cucumis melo L.) inbred lines belonging to cantaloupensis group (lines numbered from D1 to D22) and reticulatus group (lines numbered from D23 to D30). The inbred lines were developed by selfing exotic germplasms introduced from China, Japan and Israel at the Crop Research and Development Institute, Vietnam National University of Agriculture. The inbred lines were grown in nethouse conditions in the spring season and 31 morphological traits were recorded to identify genetic groups. Genetic diversity analysis based on phenotype showed that 30 melon inbred lines could be grouped into 6 distinct groups with genetic similarity of 0.32. Six superior lines D1, D2, D3, D7, D13, and D20 were selected for diallel cross to evaluate combining ability in 2017 summer-autumn season. Four inbred lines D1, D3, D7, and D20 had high combining ability for yield and total soluble solids (Brix degree). Three promising hybrids THL2 (29.65 t/ha), THL6 (30.23 t/ha), and THL9 (33.17 t/ha) were selected for further study.
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