新亲本组合抗可可女巫扫帚病的早期选择

Summa Phytopathologica Pub Date : 2021-04-01 DOI:10.1590/0100-5405/244673

J. L. Pires, E. Luz, Antônio Alves Pimenta Neto

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引用次数: 3

摘要

摘要对通过反复选择抗性和产量获得的69个亲本间杂交后代进行担孢子接种。对症状进行评估，并与同样接种的Catongo、SIC 23和SCA 6后代的症状进行比较。43个新后代与SCA 6在统计学上没有差异，而10个新后代在统计学上优于该对照。可以突出显示的雌性父母是（P4B x SCA 6）、（MA 16 x SCA 6。最佳男性父母是（CAB 214）、（CAB 208）和（P4B x OC 67），它们之间没有差异。这项研究证明了父亲和母亲之间存在基因组合，加性效应的发生以及这些因素的显性遗传，这应该允许选择具有更高抗性水平和耐用性的克隆。

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Early selection for resistance to cacao witches’ broom in new parental combinations

ABSTRACT Progenies from 69 crosses between parents obtained by recurrent selection for resistance and yield were inoculated with Moniliophthora perniciosa basidiospores. The symptoms were evaluated and compared with those in the equally inoculated progenies of Catongo, SIC 23 and SCA 6. Forty-three of the new progenies did not differ statistically from SCA 6, while 10 new progenies were statistically better than this control. The female parents that can be highlighted are (P4B x SCA 6), (MA 16 x SCA 6), (CEPEC 86 x SCA 6), and the EET 75 clone. The best male parents were (CAB 214), (CAB 208) and (P4B x OC 67), which did not differ from each other. This study proved the existence of gene combinations between fathers and mothers, the occurrence of additive effects and the dominant inheritance of these factors, which should allow the selection of clones with higher resistance levels and durability.

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来源期刊

Summa Phytopathologica Agricultural and Biological Sciences-Plant Science

CiteScore

0.90

自引率

0.00%

发文量

期刊介绍： The Summa Phytopathologica is a publication of the São Paulo State Plant Pathology Association (APF), Botucatu SP. Summa Phytopathologica (SP) is dedicated to publishing technical and scientific articles that describe original research in the area of Plant Pathology that may contribute significantly to its progress. SP accepts papers written in Portuguese, English, or Spanish. Its abbreviated title, Summa Phytopathol., should be used in bibliographies, footnotes and bibliographical references and strips.