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Morphology and Yield on Second Generation of Tall x Dwarf Coconut Crosses (Cocos nucifera L.)

Khairol Ismail, Mohd Fahimee Jaapar, and Mohammad Asyraf Husin

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Ismail, K., Jaapar, M.F., and Husin, M.A., 2021. Morphology and Yield on Second Generation of Tall x Dwarf Coconut Crosses (Cocos nucifera L.). United International Journal for Research & Technology (UIJRT), 2(9), pp.69-73.

Abstract

200 of 2nd generation stage of palms arising from a cross tall and dwarf of Cocos nucifera were evaluated for the morphology and yield characters. The objective of this study is to determine the segregation patterns of the morphology and the yield characters on the tall x dwarf cross at the 2nd generation stage planted in the field. In the 2nd generation population planted, 4 segregation genotypes were selected for the present study on the contrasting morphological and production characters. Data on year 4 of segregation, flowering phases, stem height, stem diameter, stem perimeter, and yield was recorded. The segregation to hybrid was the highest number of plants compared to others with 116. Recombination of the autogamous nature along with the tall characters was observed in the 2nd generation palms in terms of stem height and perimeter. Certain segregated genotypes arising from the 2nd generation recorded the high potential number of nuts per hectare/year that comprised dwarf segregation up to 25,000 compared to other segregated varieties due to their resistance to inbreeding depression. The possibility of extracting recombined lines with desirable characters to improve the Malayan tall x dwarf is also discussed.

Keywords: Coconut, Morphology, Second generation, Segregation.

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