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2019 Vol.32, Issue 4 Preview Page

Research Article

Scab Resistance of Some Pear Genetic Resources and Inter Specific Hybrid Seedlings in Field Condition

포장조건에서 주요 배 유전자원과 종간교배 집단의 검은별무늬병 저항성

Yoon-Kyeong Kim1*
,
Hae-Won Jeong2
,
Kyung-Ho Won2
,
Sam-Seok Kang1
,
Ug-Yong Lee3
,
Tae-Ho Han4
김 윤경1*
,
정 해원2
,
원 경호2
,
강 삼석1
,
이 욱용3
,
한 태호4
1Senior Researcher, Pear Research Institute, National Institute of Horticultural and Herbal Science, Rural Development Administration, Naju 58216, Korea
2Researcher, Pear Research Institute, National Institute of Horticultural and Herbal Science, Rural Development Administration, Naju 58216, Korea
3Post-doc, Pear Research Institute, National Institute of Horticultural and Herbal Science, Rural Development Administration, Naju 58216, Korea
4Professor, Department of Horticulture, Jeonnam National University, Gwangju 61186, Korea
1국립원예특작과학원 배연구소, 연구관
2국립원예특작과학원 배연구소, 연구사
3국립원예특작과학원 배연구소, 박사후전문연구원
4전남대학교 원예학과, 교수
* Corresponding Author
31 August 2019. pp. 296-302
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Abstract

This study was accomplished to select breeding materials among the pear germplasm 6 species 43 accessions and check out the expression of scab incidence of inter specific hybrids of 5 crosses 609 seedlings for scab resistance breeding. Fruitlets scab incidence of P. pyrifolia, P. bretschneideri and P. ussuriensis were 59.5, 73.4 and 63.0% respectively, and also fruitlets scab incidence of interspecific hybrid cultivars between P. pyrifolia and P. bretschneideri were 77.7%. However, fruitlets scab incidence of P. communis and interspecific hybrid accessions between P. pyrifolia and P. communis were significantly less than 15%. As a result of the Duncan test, scab resistance of pear accessions were classified into two groups: P. communis and their hybrid were resistance and P. bretschneideri, P. pyrifolia, P. ussuriensis, and among their hybrid were susceptible. Also, it showed the same trend in the seedlings. Scab incidence of ‘Seolwon’ × ‘Chuwhangbae’ and ‘Supergold’ × ‘Mantienhong’ in P. pyrifolia seedlings showed more than 80%, while that of interspecific hybrid between P. pyrifolia and P. communis showed about 2%. It showed scab resistance of P. communis transferred to hybrid seedlings and expressed to be dominant in their seedlings. Namely, P. communis was good breeding materials for scab resistance.

Keywords
Breeding
Disease resistance
Germplasm
Pyrus
In vivo
References
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Information
  • Publisher :The Plant Resources Society of Korea
  • Publisher(Ko) :한국자원식물학회
  • Journal Title :Korean Journal of Plant Resources
  • Journal Title(Ko) :한국자원식물학회지
  • Volume : 32
  • No :4
  • Pages :296-302
  • Received Date : 2019-03-31
  • Revised Date : 2019-06-23
  • Accepted Date : 2019-06-25
  • DOI :https://doi.org/10.7732/kjpr.2019.32.4.296
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