http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Hae Kyeong Park(朴來敬) (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
-
벼 雄性不稔性을 利用한 集團改良에 관한 硏究 Ⅱ. 自然相互交雜 및 新遺傳子源 浸透交雜에 의한 集團循環改良 育種過程中 몇가지 量的形質의 變異
Hae Chune Choi(崔海椿),Soo Yeon Cho(趙守衍),Rae Kyeong Park(朴來敬) 한국육종학회 1988 한국육종학회지 Vol.20 No.2
This study was conducted to clarify the benefit of active recurrent improvement scheme of rice population and to find out the problems occured in process of recurrent random mating and introuduction of new germplasm into the basic populations using genetic male-sterile factor during 1978-1983. Once (NDR₁, NSR₁) and twice random-mating populations(NDR₂, NSR₂, and modified bulk F₄ populations of two crosses between male-sterile mutants of Nihonmasari(Nihonmasarims) and Suweon 223 or Suweon 235, and improved populations by penetrating outcross between male-sterile plants of NDR₂ or NSR₂ populations and Jinjubyeo or Samnambyeo(NDJ, NDS and/or NSJ, NSS) and their F₂ populations selected from male-fertile plants of NDJ and NSJ populations, and parental varieties included two male donors were investigated for phenotypic variations of some quantitative characters during 1984-1985. The modified bulk F₄, populations were derived from male-fertile F₂selections of two basic crosses and were maintained by single seed descent method(SSD). Although the genetic male sterility of Nihonmasariims was controlled by single recessive gene(msms), observed frequencies of male-sterile plants in once or twice random mating populations were remarkably decreased compared to expected ones. This phenomenon might be resulted from pleiotrophic effect of male-sterile gene such as inferiority of competition in vegetative growth and fertilization compared to normal one. The penetration ratio of new germplasm, calculated by the difference in frequencies of male-sterile plants between basic random mating and penerated mating populations under the natural condition of planting with alternative rows of the two populations, was about 11% as average of four different penerated mating populations varied from 2.1% to 16.2%. The male-sterile plants showed significantly shorter culm and panicle length, less tillers per plant, and less spikelets per panicle compared to normal fertile ones. Twice random mating population revealed significantly increased frequencies of tall, late heading, numerous spikelets and severely awned plants compared to once random mating population. Also, the former showed significantly less frequency of intermediate infections but more frequencies of resistant and susceptible plants to blast disease compared to the latter. This indicates that recurrent random-mating populations should be maintained with relatively desirable range of variations by discarding these undesirable recombinants. The NDJ, NDS, NSJ, and NSS populations manifested the significant change of distributions to the respective directions of earlier heading, shorter culm, longer panicle, more spikelets, less awning, more or less tiller, and more or less tolerance to blast or stripe virus diseases compared to the basic random-mating populations according to respective combinations between the basic populations and new donor parents. Also, these recurrently improved populations and random-mating populations presented wider variations of various agronomic characteristics compared with the modified bulk F₄ populations. These facts point out that the active recurrent improvement scheme using genic male-sterile factor as outcrossing carrier may be utilized effectively to accumulate the numerous gene sources together into a population and to increase the opportunity of continuous recombinations. The phenotypic correlations among some quantitative characters, except the association between panicle length and spikelet numbers per panicle, showed similar or considerably different tendency according to the populations due to different parental combinations and different breeding manipulations. Associations between the quantitative characters such as days to heading, culm length, panicle length, and number of spikelets per panicle, whose variations were largely changed by recombined variation, increased significantly according to random-mating times but decreased
-
細胞質 雄性不稔系統을 利用한 靑刈飼料用 油菜 1代雜種 育成硏究 Ⅰ. 油菜 雄性不稔 CGMA와 CMS F₁의 靑刈飼料 生産性
Jung Il Lee(李正日),Yong Hwan Park(朴用煥),Bong Ho Lee(李奉鎬),Hae Kyeong Park(朴來敬) 한국육종학회 1987 한국육종학회지 Vol.19 No.2
In order to search for the possibilities on the replacement with the developed forage rape instead of the imported varieties, several hybrid lines for forage rape were made and tested in the field condition. They hybrid lines were produced using cytoplasmic-genetic male sterility (Mokpo-MS) which developed in our country by the authors, and cytoplasmic male sterility (CMS) introduced from the west Germany. Forage production of CMS used hybrid lines were more than that of the introduced varieties which is informed the possibilities on the replacement with the developed hybrid lines to the imported varieties. Forage yield of hybrid lines was decreased by the delayed sowing time, the highest yield obtained in August 15 sowing. Among the 16 hybrid lines used CGMS, Mokpo-MS/English Giant hybrid, produced highest forage yield showing 46% yield increase compared to the introduced forage rape variety Akela. The CMS used hybrid line, CMS₂/Velox, produced 88% more forege yield than that of the introduced forage rape variety Akela, on the other hand 47% increased that of the variety Velox. Hybrid lines developed using the CMS line were 65% more forage yield in average compared to those of the CGMS used hybrid lines. Therefore, it was assumed that the development of hybrid variety for forage rape would be more available than using the cytoplasmic-genetic male sterility.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
