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首页> 外文期刊>Revista Brasileira de Fruticultura >Herdabilidade da necessidade de calor para a antese e brota??o em pessegueiro
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Herdabilidade da necessidade de calor para a antese e brota??o em pessegueiro

机译:桃树开花和萌芽所需热量的遗传力

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Heritability of heat requirement for blooming and leafing was investigated in peach [Prunus persica (L.) Batsch], using artificially chilled excised shoots of 11 populations and 16 parental clones of low, intermediate and high heat requirement. The estimated values of broad sense heritability of heat requirement in flower buds were 45% and 57%, in 1999 and 2000, respectively. In leaf buds, the heritability was 30% in 1999. 'BR-1', 'Barbosa', 'Chula', 'Chinoca', and 'Eldorado' can transmit the heat requirement character better to offspring than the others studied genotypes. The data support a model for quantitative inheritance with partial dominance for low heat requirement. Seedling selection for high heat requirement delay blooming more than leafing.
机译:利用人工冷藏的11个种群的切芽和16个低,中和高热量需求的亲本无性系,研究了桃子[Prunus persica(L.)Batsch]的开花和叶子热需求的遗传力。在1999年和2000年,花蕾中热量需求的广义遗传力估计值分别为45%和57%。在叶芽中,遗传力在1999年为30%。与其他研究的基因型相比,“ BR-1”,“ Barbosa”,“ Chula”,“ Chinoca”和“ Eldorado”可以更好地将热量需求特征传递给后代。数据为低热量需求提供了具有部分优势的定量遗传模型。高热量需求的幼苗选择比起叶子更能延迟开花。

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