Interspecific Hybridization in between New and Old-world Species of Luffa and Its Phylogenetic Implication.

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概要

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• Genetical and cytological investigations in the genus Luffa have been carried out in between a New-world species of L. operculata and an Old-world species of L. hermaphrodita. Interspecific hybridization brings out certain features of great relevance for tracing inter-relationship between these species. The F1 plants of L. hermaphrodita × L. operculata were fertile and monoecious. The results obtained in this investigation confirmed the double recessive nature of the hermaphrodite sex-form possesed by L. hermaphrodita. At meiosis bivalent, mulltivalents and univalents have been observed in a few PMCs of the F1 plants. The fruit shape was clearly found to be determined by a single incompletely dominant gene. In both directions the fruits in F1 generation were intermediate to the parent as also confirmed from the 1:2:1 ratio.

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財団法人 日本メンデル協会 | 論文

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