SELECTION OF SOME PROMISING LINES THROUGH PEDIGREE METHOD IN OKRA. | ||||
| Journal of Agricultural Chemistry and Biotechnology | ||||
| Article 1, Volume 3, Issue 2, February 2012, Page 41-48 PDF (442.24 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jacb.2012.54719 | ||||
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| Author | ||||
| Soher E. A. Elgendy | ||||
| Vegetable Research Department, Horticultural Res. Inst. ARC, Egypt. | ||||
| Abstract | ||||
| The present investigation was carried out with the purpose of selecting new economic okra strains through pedigree method. In this respect, four original cultivars were previously crossed. The resulting F1’s of them were self pollinated. Having the dessendant F2’s in 2004, self pollination and selection based on economic traits was done subsequently for five successive generations. The complete phenotype and genotype homozygosity was then reached having 9 selected strains ansested from 5 F2’s. In the summer season of 2009, a large scale field experiment was designed and applicated to evaluate these promising nine selected strains side by side with their original 4 cultivars. The most improtant results obtained can be summarized as follows : - Differences between all the studied traits were shown to be highly significant for the 9 selected strains as well as 4 original cultivars. - The 9 selected strains surpassed their 4 original cultivars with respect to the average total yield of pod/plant. It was recorded as 1213.79 gr for the 9 selected strains , 917.41 gr for original 4 cultivars . - Line number 5 gave the highest mean of yield quantity (1839.54 gr ) in comparison to the highest cultivar Balady (1073.8 gr ). - Lines number 5,1,7,6 and 8 surpassed all 4 cultivars with respect to yield quantity. Also lines 3,2 and 9 acted in the same manner as the rest of lines. - Line number 4 showed the least values for the most studied characters. Line number 5 gave the highest values with respect to days to first flower, number of fruits , number of branches and number of leaves. - All the nine selected lines showed earlier in comparison to 4 cultivars except Romy cultivar . -Lines number 5,6,1 and 7 gave the highest number of friuts. - Lines number 3,5 and 2 were the shortest as plant height while line number 6 was the longest ( 289.3 cm ) at all. - Line number 1 showed the highest value with respect to friut weight ( 7.1 gr ) while line number 4 was the lowest (4 gr ) with respect to this character. - There was a negative significant correlation between plant hight and both number of node and days to first flower. The same was found between fruit length and fruit diameter. Also, there was a highly positive significant correlation between number of friut and all of number of branches, number of leaves and fruit weight. A highly positive significant correlation between total number of fruits/plant and both fruit weight and number of fruits per plant were detected. Also, a heighly positive significant correlation was noticed between fruit diameter and fruit weight and between number of node and days to first flower. Thus, it could be conclouded that most of these selected lines are useful for commercial cultivation. | ||||
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