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Phenotypic characterization of recurrent selection S1 Papaya (Carica papaya L.) families by multivariate approach
Euphytica ( IF 1.6 ) Pub Date : 2020-07-01 , DOI: 10.1007/s10681-020-02655-1
Renato Santa-Catarina , Julio Cesar Fiorio Vettorazzi , Diego Fernando Marmolejo Cortes , Josefa Grasiela Silva Santana , Tathianne Pastana de Sousa Poltronieri , Daniel Pereira Miranda , Adriana Azevedo Vimercati Pirovani , Nádia Fernandes Moreira , Marcelo Vivas , Messias Gonzaga Pereira

In the current study, the morphological traits in 222 individuals of the UCP-C0 base population were evaluated to distinguish the phenotypic variability and thus to be used in the papaya recurrent selection program. The studied traits showed considerable differences among the individuals. The fruit weight ranged from 279.7 to 1808.0 g with average of 859.7 g, the number of commercial fruits ranged from 5 to 125 fruits, the fruit and pulp firmness ranged from 76.69 and 59.44 N to 166.70 and 132.93 N respectively, while the soluble solids content was between 5.10 and 14.93° Brix. The principal component analysis showed that five components explained 76% of the total variance. Morphological cluster analysis based on the UPGMA method showed 13 distinct clusters among all the studied accessions, and the fruit weight was that most contributed for the genetic diversity. The results show that the UCP-C0 has wide genetic variability and therefore the choice of genotypes used as parents in the generation of the UCP-C0 was very effective to generate a broad base population for most of the agronomic and fruit quality traits. The strategy to use the highly heterogeneous and heterozygous dioic progenies, and the pollen mix of elite genitors, contributed to the observed results, mainly by the genetic variability present in them. A broad base population is fundamental to establish the recurrent selection program, a classical methodology that may provide superior genotypes at short and long terms.

中文翻译:

通过多元方法对轮回选择 S1 木瓜 (Carica papaya L.) 科进行表型表征

在目前的研究中,对 UCP-C0 基础种群的 222 个个体的形态特征进行了评估,以区分表型变异性,从而用于木瓜轮回选择程序。所研究的特征在个体之间显示出相当大的差异。单果重279.7~1808.0 g,平均859.7 g,商品果数5~125个,果实硬度和果肉硬度分别为76.69和59.44 N,分别为166.70和132.93 N,可溶性固形物含量介于 5.10 和 14.93° 白利糖度之间。主成分分析表明,五个成分解释了总方差的 76%。基于 UPGMA 方法的形态学聚类分析显示所有研究的种质中有 13 个不同的聚类,果实重量对遗传多样性的贡献最大。结果表明,UCP-C0 具有广泛的遗传变异性,因此在 UCP-C0 的世代中选择用作亲本的基因型非常有效地为大多数农艺性状和果实品质性状产生广泛的基础群体。使用高度异质和杂合的双子后代的策略,以及优良生殖器的花粉混合,对观察到的结果做出了贡献,主要是由于它们中存在的遗传变异性。广泛的基础种群是建立循环选择程序的基础,这是一种经典的方法,可以在短期和长期提供优良的基因型。结果表明,UCP-C0 具有广泛的遗传变异性,因此在 UCP-C0 的世代中选择用作亲本的基因型非常有效地为大多数农艺性状和果实品质性状产生广泛的基础群体。使用高度异质和杂合的双子后代的策略,以及优良生殖器的花粉混合,对观察到的结果做出了贡献,主要是由于它们中存在的遗传变异性。广泛的基础种群是建立循环选择程序的基础,这是一种经典的方法,可以在短期和长期提供优良的基因型。结果表明,UCP-C0 具有广泛的遗传变异性,因此在 UCP-C0 的世代中选择用作亲本的基因型非常有效地为大多数农艺性状和果实品质性状产生广泛的基础群体。使用高度异质和杂合的双子后代的策略,以及优良生殖器的花粉混合,对观察到的结果做出了贡献,主要是由于它们中存在的遗传变异性。广泛的基础种群是建立循环选择程序的基础,这是一种经典的方法,可以在短期和长期提供优良的基因型。和精英生殖器的花粉混合,对观察到的结果做出了贡献,主要是由于它们中存在的遗传变异性。广泛的基础种群是建立循环选择程序的基础,这是一种经典的方法,可以在短期和长期提供优良的基因型。和精英生殖器的花粉混合,对观察到的结果做出了贡献,主要是由于它们中存在的遗传变异性。广泛的基础种群是建立循环选择程序的基础,这是一种经典的方法,可以在短期和长期提供优良的基因型。
更新日期:2020-07-01
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