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Varietal relationships of growth factors of young cacao seedlings

Varietal relationships of growth factors of young cacao seedlings

Euphytica 15(2): 211-223

Post-germination growth in selfs and crosses of 6 genetically dissimilar cacao lines was largely determined by seed weight. Subsequent development was influenced partly by initial growth but there were indications that the advantage due to seed weight tended to disappear with age. Plant height, diameter and fresh weight after 14 weeks were positively associated but the degree of correlation was determined by the origin of the parents. Most hybrids were larger than the inbreds of the same parents and grew at a faster rate. Combining ability appeared to be specific. Inbreds were more variable than hybrids of the same parents. Seed size was determined by the female parent but in some cases there was a tendency for the male parent to exert some influence which was specific in nature. Inter-varietal variability for plant height appeared to be sufficiently large for this character to be used in selection providing it is associated with factors controlling yield.

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Accession: 014800477

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DOI: 10.1007/bf00022326

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