油菜 1代 雜種의 主要 特性에 對한 雜種 强勢 程度

權炳善,鄭東熙,梅崎輝尙,寺尾寬行,井之上準 順天大學校 農業科學硏究所 1992 農業科學硏究 Vol.6 No.-

In order to obtain basic informations on F_1 hybrids of rape which are suitable at the southern part of Japan, 10 hybrids were grown from Oct. 1990 to Jun. 1991 at faculty agriculture, Kyushu University, Fukuoka, 812, Japan, and the evaluations were conducted using heterosis which were comparison between the performance of F_1 and that of parental average and heterobeltiosis which were comparison between the performance of F_1 and that of better parent. All the 10 crosses showed high degree of heterosis and heterobeltiosis in plant height and the maximum increase over better parent was 21%. Ten crosses showed high degree of heterosis and a crosses showed greater ear length than better parents. In case of number of branches per plant, all 10 crosses exceeded the parents. In case of number of brnches per plant, all 10 crosses exceeded the parental average and 8 crosses showed grater number of branches per plant than better parents. All the 10 crosses showed high degree of heterosis and heterobeltiosis in the number of pods per plant and the maximum increase over better parent was 7%. The performance of F_1 for pod length was similar to that of parental average and better parents. Pod setting density of all 10 hybrids was high degree of heterosis and heterobeltiosis of parental average and better parents. Some degree of heterosis and heterobeltiosis were observed in seed seeting rate only in 7 crosses. All the 10 hybrids produced higher garin yield than higher parent and the maximum increase over higher parent was 67%. Hybrids between early parent and late parent showed late flowering and falling blossoms date. However, in a crosses betwen late parents, the F_1 flowered 2 days earlier than the parents.

日本型水稻と日印交雜水稻における 分離種子根の伸長性の比較(I報)

井之上 準,折谷 隆志,金晋鎬 順天大學校 1985 論文集 Vol.4 No.1

日本型水稻20品種, 一印交雜水稻20品種の種子根·分離根を川田らの"改良培地"で培養し,分離根の發育を調査した. 1.分離根の長さは,27℃區では日本型水稻の10.9∼18.0㎝に대??して日印交雜水稻は13.2∼19.7㎝で,兩水稻品種間に著しぃ差異はなかったが,30℃區はでは9.1∼19.0㎝と16.7∼27.3㎝で,日本型水稻して日印交雜水稻の伸長は著しく良好であった. 2.分離根の乾物重は,27℃區ては日本型水稻が0.9∼2.0㎎でなったのに對し,日印交雜水稻は3.2∼5.7㎎, 30℃區では0.9∼2.3㎎に對し,4.2∼10.1㎎で,兩溫度흉にねい て兩品稻群間に明からな差が認られた.なね,この差異は30℃區にねいてより著しか った. 3.日本型水稻と日印交雜水稻の間にみられた分離根の乾物重の差異は,主に分지??根の發育の良否によるもので,特に長さ1∼5㎝の分岐根數に 差異が認られた. 4.上記のよらな分岐根の發育の違いは品種群の特性によるものか,あるいは"改良培地"に對する適應度が異なることによるものかについては不明であり,今後にまちたい. 謝辭:本實驗の遂行にあたり有益な助言をいただいた佐賀大學農學部田中典幸博土に深く 感謝いたします. Based on a culture method of excised root tip reported by Kawata et al.??, this study examined growth of seminal root tips of Japonica type and Japonica-Indica hybrid rices. Throughout the studies, the 1㎝ long root tips to initiate experiments were excised from seminal roots and the two root tips had grown in each flask containing 15ml of the culture solution. They had grown at 27 or 30℃ in the dark for three weeks, until the root growth ceased. Plant materials used were 20 varieties of Japonica-Indica hybrids bred in Korea, 10 varieties of Korean paddy rice and 10 ones of Japanese paddy rice. The following results were obtained. 1. Root length at 27℃ varied from 10.9 to 18.0㎝ in the Japonica type rice and from 13.2 to 19.7㎝ in the Japonica-Indica hybrid rice. At 30℃, it was from 9.1 to 19.0㎝ in the former and from 16.7 to 27.3㎝ in the latter. 2. In the both cultural temperatures of 27 and 30℃, Japonica-Indica hyvrid rice had more number of the well developed branched roots than the Japonica type rice. The dry root weight which seems to represent the root growth was from 0.9 to 2.0㎎ in the Japonica type rice and from 3.2 to 5.7㎎ in the Japonica-Indica hyvrid rice at 27℃, while it was from 0.9 to 2.3㎎ in the frmer and from 4.2 to 10.1㎎ in the latter at 30℃. 3. Excised root growth of the Japonica type rice was better at 27℃, than at 30℃, while in the case of the Japonica-Indica hybrid rice this was reverse.

Gibberellin(GA₃)處理에 依해서 誘起되는 浮稻의 幼苗에 있어서 節間伸長의 品種間差異

金晋鎬,井之上 準 順天大學校 1984 論文集 Vol.3 No.1

幼苗時에 있어서 浮稻와 非浮稻의 區別 및 浮稻의 節間伸長性에 對한 差異를 判定하는 檢定方法을 探求할 目的으로 GA₃의 葉面撒布에 依해 誘起되는 節間伸長의 位置에 對해서 檢討하였다. 供試材料는 "방글라데시" 産浮稻 181品種, "타이랜드"産浮稻85品種 및 非浮稻101品種이었다. 얻어진 結果를 要約하면 다음과 같다. 1. 第 3~5葉期에 GA₃1~1000ppm을 1回 葉面撒布하여 節間伸長이 誘起되었으나伸長이 誘起된 節間의 最低位置는 GA₃濃度가 낮을수록, 또한 節間伸長性이 낮은 品種일수록 높은 傾向으로 나타난다 2. "타이랜드" 産에 있어서 節間伸長이 良好한 品種과 不良한 品種 또는 非浮稻의 區別은 GA₃1000 또는 100ppm 1回의 葉面撒布處理에 依해서 伸長이 誘起된 節間 最低位置의 差異에 依해서 거의 區別될수 있었으나 節間伸長이 不良한 浮稻와 非浮稻의 區別은 困難하였다. 3. "방글라데시"産의 浮稻는 "타이랜드"産의 浮稻보다 GA₃에 依한 節間伸長의 誘起作用을 强하게 받았다. 따라서 GA₃100ppm의 葉面撒布에 依해서 誘起되는 最低伸長節間位置의 差異에 依해서 兩者를 區別할수 있었다. Internode elongation was induced during the seedling stage by foliar application of gibberellic acid (GA₃, 1-1,000 ppm) in floating rice and non-floating rice. The induction effect of GA₃was stronger in floating rice than in non-floating rice. Comparing with Bangladesh floating rice with Thai floating rice, the induction effect was generally stronger in the former than in the latter. In each of both floating rices, it was stronger in the varieties which have good elongation ability than in those with inferior elongation ability. But, the promotion of elongation of both leaf sheath and leaf blade by GA₃did not differ among Bangladesh floating rice, Thai floating and non-floating rices.

아프리카 벼 Oryza glaberrima의 종실 이층조직의 발달과정과 등숙기간 중 탈립성의 변화

Il Doo Jin,Yeong Hwan Bae,Jun Inouye 韓國作物學會 1995 Korean journal of crop science Vol.40 No.1

아프리카 벼에 있어서 벼알과 소피경 사이에 형성되는 이층조직의 특이성에 따라, '부분이층', '불규칙이층' 및 '완전이층'의 품종을 각각 2품종씩 공시하여 유수형성 이후 유수와 영화의 신장에 따른 이층조직의 형성 및 발달과정을 해부형태학적으로 관찰하였다. 또한 출수후 수확기까지 등숙과정에 있어서 탈립성정도의 변화와 이층조직과의 관계에 대하여 검토하였다. 아프리카 벼의 유수와 영화는 출수전 15일 이후 급격한 신장을 보여 출수전 5일 경에는 출수기와 거의 동일한 길이로 신장되었다. 출수전 15일 경에는 작은 유조직세포로 구성된 이층조직의 형성부위를 인정할 수 있었는데, 부분이층의 외영쪽에는 이층조직의 형성부위를 인정할 수 없었고, 불규칙이층의 외영쪽에는 부분적으로 집단화되어 있는 소형의 유조직세포들을 관찰할 수 있었다. 출수전 10일경 이층조직 주변의 세포들은 세포벽이 식후하고 목화되어 1-2층의 유조직세포로된 이층조직을 더욱 뚜렷하게 구분할 수 있었는데, '부분이층'의 외영쪽에는 후벽조직속에 1-2개의 유조직세포가 혼재되어 있었고, '불규칙이층'의 외영쪽에는 불규칙하게 집단화된 유조직세포를 관찰할 수 있었다. 아프리카 벼에 있어서는 출수후 2주째 벼알의 등숙이 수확기와 거의 비슷하게 진전되었는데, 이때 이층구조의 붕괴현상 관찰할 수 있었으며, 또한 벼알과 소피경 사이의 인장강도도 수확기와 동일하게 저하하였다. Six African rice varieties, two each from three types having the characteristics of partially, irregularly, and completely developed abscission layers, were selected and grown 1) to investi-gate the histological differences during the formation and development of the abscission layers and 2) to evaluate the changes in the breaking tensile strength required to detach a grain from its pedicel dur-ing ripening period in relation with developmental stage of the abscission layers. In African rice, the panicle and spikelet grew rapidly from 15 days before heading and almost completely grown in length at five days before heading. The abscission regions were recognized at 15 days before heading. However, any apparently developed abscission layers were not recognized in the lemma side for partially developed abscission layers. A group of parenchymatous cells could be observed sporadically in the abscission layers of the lemma side for irregularly developed ab-scission layers. At ten days before heading, abscission layers consisting of one or two layers of parenchymatous cells were clearly distinguished from neighboring cells due to thickened and lignified cell walls. There were a number of individual parenchymatous cells scattered sporadically in the lemma side of partially developed abscission layers, and a number of grouped parenchymatous cells scattered randomly in the lemma side of irregularly developed abscission layers. At two weeks after heading, the grains became almost fully filled. The cracking of abscission layers between rachilla and pedicel was observed, and the breaking tensile strength required to detach a grain from its pedicel was as low as that at harvest time.

고냉지농업연구실편 : FLORAL INDUCTION BY DARK PRETREATMENT IN NON-VERNALIZED WINTER BARLEY

(E Hun Kim),(Tadahiko Furuya),(Jun Inouye) 강원대학교 농업과학연구소 1989 강원 농업생명환경연구 Vol.3 No.-

油菜 莢裂開性 程度의 品種間 差異

Byung Sun Kwon(權炳善),Il Dao Jin(陳日斗),Young Seok Jang(張永錫),Jun Inouye(井之上準) 한국육종학회 1992 한국육종학회지 Vol.24 No.4

The pod dehiscence of rape is an important factor related to the harvest loss. To evaluate the varietal difference in the tendency of pod dehiscence, the breaking bending strengths of rape pod from 132 varieties were determined using a strain gauge type load cell. The breaking bending strengths were estimated treating each rape pod as a two-support beam and applying a dwonwared load at the center until the suture of pod breaks. Breaking bending strenths of the pods of easily dehiscent varieties were lower than those of medium and resistant varieties. Breaking bending strengths of pods measured by positioning the two lines of suture aligned vertically were lower than the measurements with the suture lines aligned horizontally. The positive correlation between the measurements with different positioning of pods was recognized at 0.01 probability level. Breaking bending strengths of the pod attached at upper part of main stem and primary branches were lower than those attached at medium and lower parts, and the mean value of those of the whole plant was about the same as the value of medium part. Therefore, it seems that the degree of pod dehiscence could be expressed by breaking bending strengths of the pods attached at medium part of the main stem and primary branch and with each pod positioned such that the lines of suture are aligned vertically. However, breaking bending strengths of the pod air-dried after harvest were lower than the values measured at harvest, and the positive correlation was recognized at 0.01 probability lvel. The breaking bending strengths were found to be positively correlated with width and thickness of pod, and the varieties resistant to pod dehiscence showed high values in the breaking bending strengths and thier width and thickness of the pod were larger. Rape cultivars, AB 120, Germany, Melchouski, Norin 35 and Naehan-yuchae showed higher resistant breaking bending strength of pod in the experiment. Therefore, it was concluded that AB 120, Germay, Melchouski, Norin 35 and Naehanyuchae were the most suitable cultivars as breeding material for higher yield and resistant pod dehiscence at the southern part of Korea.