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Breeding method for disease-resistant and heat-resistant capsicum annuum L. rootstocks of different physiological races

A physiological race and anti-epidemic technology, applied in botany equipment and methods, horticulture, application, etc., can solve complex and lengthy breeding process and other problems, and achieve the goal of improving comprehensive agronomic traits, low breeding cost, and speeding up the process Effect

Inactive Publication Date: 2014-06-11
NORTHWEST A & F UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, breeding varieties with good quality, good comprehensive agronomic traits, high disease resistance and heat tolerance is a complicated and lengthy breeding process

Method used

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  • Breeding method for disease-resistant and heat-resistant capsicum annuum L. rootstocks of different physiological races
  • Breeding method for disease-resistant and heat-resistant capsicum annuum L. rootstocks of different physiological races

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0107] (1) Breeding of pure pepper lines of race 1 and race 2 that are resistant to blight and heat-resistant pepper pure lines

[0108] Physiological race 1 (ph1) and physiological race 2 (ph2) pepper strains PBC495 (Zhang Yingli, Gong Zhenhui, Li Dawei, Huang Wei, Lu Minghui, Chen Rugang) were selected for epidemic resistance. Identification of pepper blight pathogens in Shaanxi and indoor screening of control agents, Northwest Agriculture Acta Sinica, 2009, 18 (5): 336-340) and heat-resistant pepper strain B35【Zhu Wei, Lu Minghui, Gong Zhenhui, and Chen Rugang. Cloning and Expression under Heat Stress of A Small Heat Shock Protein Gene CaHSP24from Pepper[J ]. African Journal of Biotechnology, 2011, 10 (25): 4968-4976]. The seeds were provided by the Pepper Research Group of the College of Horticulture, Northwest A&F University. Soak their seeds in warm soup at 55°C for 20 minutes, soak in clear water for 5 hours, and germinate them in a completely dark artificial climate bo...

Embodiment 2

[0153] (1) Breeding of pure pepper lines of anti-epidemic race 1 and heat-resistant pepper pure lines

[0154] The pepper strain PBC137, which is resistant to physiological race 1 (ph1), was selected [Zhang Yingli, Gong Zhenhui, Li Dawei, Huang Wei, Lu Minghui, Chen Rugang. Pathogen identification of pepper blight in Shaanxi and indoor screening of control agents, Northwest Agricultural Journal, 2009, 18 (5) : 336-340] and heat-resistant pepper strain B35 [Zhu Wei, Lu Minghui, Gong Zhenhui, and Chen Rugang. Cloning and Expression under Heat Stress of A Small Heat Shock Protein Gene CaHSP24 from Pepper[J]. African Journal of Biotechnology, 2011 , 10 (25): 4968-4976], the seeds were provided by the Pepper Research Group of the College of Horticulture, Northwest A&F University. Soak their seeds in warm soup at 55°C for 20 minutes, soak in clear water for 5 hours, and germinate them in a completely dark artificial climate box at 28°C. After 4 days, the seeds are white and sowed in...

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Abstract

The invention discloses a breeding method for disease-resistant and heat-resistant capsicum annuum L. rootstocks of different physiological races. According to the method, the advantages of capsicum annuum L. heterosis breeding and grafting technologies are integrated, and the disease resistance and the heat resistance of varieties with excellent comprehensive characters but poorer disease resistance and heat resistance can be remarkably improved by the bred disease-resistant and heat-resistant capsicum annuum L. rootstocks; the method has the advantages of simplicity in operation, breeding time saving, low breeding cost and the like; by the method for improving the disease resistance and the heat resistance of excellent varieties by breeding the rootstocks, the resistance breeding process of capsicum annuum L. is greatly accelerated.

Description

technical field [0001] The invention belongs to the field of vegetable breeding, and relates to a method for breeding capsicum rootstocks, in particular to a method for selecting heat-resistant capsicum rootstocks of different physiological races resistant to blight, which skillfully combines heterosis breeding techniques with grafting techniques, and breeds The disease-resistant and heat-resistant rootstocks can effectively improve the disease resistance and heat tolerance of pepper varieties with excellent comprehensive agronomic traits but poor disease resistance and heat tolerance. Background technique [0002] Pepper (Capsicum annuum L.) is a typical "heat-loving and heat-labile" plant. When the temperature of the pepper growing environment exceeds 32°C, heat stress will occur, resulting in poor pollination and fertilization and flower and fruit drop. The fruit setting rate drops to 10% to 20%, which ultimately affects the quality and yield of peppers. In my country, g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/06
Inventor 巩振辉田士林张莹丽郭猛贺玉梅
Owner NORTHWEST A & F UNIV
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