학술논문
Occurrence of Off-type Plants in japonica/indica Hybrid Rice Cultivars
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- 영문명
- 발행기관
- 한국자원식물학회
- 저자명
- Lee, Jeom-Ho Jeon, Yong-Hee Hwang, Hung-Goo
- 간행물 정보
- 『Plant Resources』Vol.7 No.2, 141~146쪽, 전체 6쪽
- 주제분류
- 농수해양 > 기타농수해양
- 파일형태
- 발행일자
- 2004.08.31
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국문 초록
영문 초록
Frequent occurrence of off-type plants in a given cultivar has been a serious problem in both breeder s and farmer s fields. An experiment was designed to examine the differences in rate of occurrence of off-type plants among Tongil-type cultivars (high yielding cultivars derived from indica/japonica hybridization) from which the possible cause of higher occurrence of off-type plant in a specific cultivar was deduced. Among five Tongil-type cultivars examined for morphological variant in the field, only one cultivar, Dasanbyeo, had off-type plants. When analyzed with SSR markers, off-type plants showed different band patterns from original cultivar, having several extra bands in addition to cultivar-specific band, suggesting that off-type plants were originated from Dasanbyeo, rather than originated from mixing or mishandling of seed materials with other cultivars. The possible cause of off-type occurrence seems to be natural pollination with other cuItivars adjacent to the original cultivar during seed multiplication. This was supported from the observation that self-crossed progeny of the off type plants showed a wide range of variation of agronomic traits which could not be observed when there was a smaller introduction of genes to the fixed germplasm as happened in the case of cultivar mutation. Another evidence supported this idea that Dasanbyeo showed much of difference in floral organ and behavior to other cultivar to be subjected to higher out-crossing than other cultivars examined.
목차
INTRODUCTION
MATERIAL AND METHODS
RESULT AND DISCUSSION
LITERATURE CITED
해당간행물 수록 논문
- Unrecorded Species of Cordyceps used Oriental Medcine Resources
- Occurrence of Off-type Plants in japonica/indica Hybrid Rice Cultivars
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- Characteristics and Breeding of a New Thornless Castor aralia Cultivar, Cheongsong II
- Analysis of Genetic Diversity of Korean Wheat Cultivars Using Microsatellite DNA Polymorphisms
- Genetic Analysis of Apoplastic Proteins in Barley Crosses
- Application of heterogeneous RNA probes labeled immuno-fluorescent agent DIG for the screening a noble gene in cucumber
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- Effect of Activated Charcoal on Growth of Zingiber mioga ROSC
- Hybrid Breeding of Red Pepper (Capsicum annum L.) Using Cytoplasmic Male Sterile Lines Combined with Phytophythora Resistance in Korea
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