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盧一燮,金鎭漢 충북대학교 농업과학기술연구소 1990 農業科學硏究 Vol.8 No.1
This study was conducted to examine the effects of rhizosphere temperature on the growth of seedlings, internal and external morphology of leaves and absorption of mineral nutrients in pepper (Capsicum annuum L). Pepper seedlings were grown at rhizosphere temperature of 13℃, 18℃, 23℃, 28℃ and 33℃, respectively. Leaf thickness, chlorophyl content, number of chloroplasts, number of cells, size and number of palisade cells and number of stomata were measured and inoganic eleme-nts were analized. The results were summarized as follows ; 1.Seedling weight and fruit weight were heavier at 23℃, while they were reduced greatly at 13℃. 2.Leaf length and leaf width were largest at 23℃ and 28℃, respectively and both traits were became smaller as temperatures were increased or decreased. 3.Chlorophy Ⅱ content and number of chloroplasts were highest at 18℃ 4.Surface area and volume of palisade cells were significally greater at 23℃ and considerably reduced at 13℃. 5.Number of stomata was highest at 13℃,while no significant difference were noted among other temperatures. Number of stomata was about 4 times higher at abaxial side than at adaxial side. 6.Contents of inoganic nutrient analyzed except phosphate, such as T- N, K2O, MgO and CaO, in leaf, stem and root were higher at 23℃ and tended to be decreased at higher or lower temperatures.
참다래 수품종의 형태적 특성과 RAPD에 의한 유연관계 분석
조윤섭,조혜성,노일섭,김월수 전남대학교 농업과학기술연구소 2000 農業科學技術硏究 Vol.35 No.-
To examine the taxonomic relationships among 13 male kiwifruits by 36 morphological characters, principal component analysis and cluster analysis were carried out. Of 36 characters, hair density on ventral midribs and between ventral midribs, leaf length/leaf width ratio etc. were considered as very useful characters for the classification of Actinidiacea plants and number of white dots on branch, full flowering period and flower color etc. also showed significant differences among A. deliciosa, A. chinensis and wild kiwis. Results of cluster analysis using scores of the principal component indicated that 13 male kiwifruits could be grouped into A. deliciosa, A. chinensis and wild kiwis phenon at 0.5 of average distance in WMVCA. This result was also very similar to that of RAPD analysis. However, it seems that more characters including various kinds of Actinidia species are needed for the exact classification.
同形化型 自家不和合性에 관한 硏究動向 Ⅱ. 配偶體型 自家不和合性에 관한 遺傳分析 및 分子的 硏究
Ill Sup Nou(盧一燮),Hyo Yeon Lee(李孝淵),Jin Ho Kim(金晋鎬) 한국육종학회 1993 한국육종학회지 Vol.25 No.1
In gametophytic self-incompatibility, pollen tubes expressing S-alleles identical to those expressed in the style cease growth in the upper third of the style. The S-allele products of pollen and discriminate between self and cross-pollen. S-allele-associated pistil proteins(S-glycoproteins) have been identified in many Solanaceae. The sequences of a number of Solanaceous S-glycoprotein have been deduced from the corressponding cDNA sequences and compared their primary structure between them. The biological function of S-glycoproteins in the self-incompatibility interactions has not been demonstrated. S-glycoproteins corresponding to the most S-alleles isolated from style extracts of Nicotiana, Petunia, Solanum has a ribonuclease(RNase) activity. But the arrest of pollen tube growth was not simply explained by RNase action, and transcription and glycosylation process is necessary for the expression of self-incompatibility, plural genes or action sites may be involved in an S-gene. There are some unresolved question in RNase hypothesis ; How can be explain S-allele specificity? What is substrate of RNase? What is self-incompatibility related substance in pollen side against style side? Anyhow, at the moment, differences between gametophytic and sporophytic systems are clear, and we are inevitably believe that plants having different structure of flower have obtained respective systems to secure the genetic heteroveneity in the course of evolution.
SEM observation the pollen-stigma interaction in self-incompatible strains of brassica campestris
Ill Sup Nou(盧一燮),Hyo Yeon Lee(李孝淵)Seon Ha Lee(李善河)Jin Ho Kim(金晉鎬)Kokichi Hinata(日向康吉) 한국육종학회 1994 한국육종학회지 Vol.26 No.2
The behavior of pollen and stigma was compared between self(incompatible)-and cross(compatible)-pollinations in connection with self-incompatibility in Brassica campestris L. through scanning electron microscope(SEM). Whithin 30 min after pollination, swollen pollen grains began to emerge a large quantity of secretion from one of the three furrows. The secretion covered the papilla cells and pollen altogether in the form of a film for about two hrs. The swelling was quicker and secretion was more abundant in the cross-pollination as compared with the self-pollinations. Recognition reaction between self and non-self occurs during the phase, but the discrimination doses not give conclusive effects. As the result of the recognition reaction, self-pollen tubes are unable to penetrate the papilla cell walls. Thus, the recognition reaction occurs at two phases ; pollen hydration-germination and pollen tube penetration. Although the self pollen tubes cannot penetrate papilla cells, the contact between a pollen papilla without breakage. This suggests that they were not separated from papilla without breakage. This suggests that a metabolic interaction has occurred between pollen tubes and papilla cells. On the other hand, the self pollen tubes elongated on the surface of papilla cells during night, indicating that they have a potential to elongate after the contact.
Brassica campestris로부터 自家不和合性 관련 SLG⁴⁸ cDNA의 cloning 및 sequencing
Ill Sup Nou(盧一燮),Hak Soon Choi(崔鶴淳),Hyo Yeon Lee(李孝淵) 한국육종학회 1996 한국육종학회지 Vol.28 No.1
A cDNA sequence homologous to the Brassica self-incompatibility locus specific glycoprotein sequence was isolated from stigmas of B. campestris plants homozygous for the SLG⁴⁸-allele. The relative molecular mass and isoelectric focusing value were calculated to be 50~60KD and pI 9.5, respectively. SLG⁴⁸ cDNA library consisting of 2.5×10⁵ recombinant clones was obtained from the poly (A)⁺ RNA. The cDNA were ligated to λZAPII arms. The selected cDNA clone was subcloned by in vivo excision using the helper phage R408 and E. coli (JM109). The resultant recombinant plasmid was sequenced with Sequenase Ver 2.0 and a deletion kit. The cDNA contains on open reading frame of 1137bases (379 amino acids), a non-coding 3’ region and a poly (A) tail, six N-glycosylation site. Overall the SLG⁴⁸ and SLG⁴⁵ or SRA⁰¹ sequences showed 80.4%, or 53.3% homology at the amino acid level. The SLG⁴⁸ sequence includes 12 cysteine residues in the carboxyl half of the molecule which are conserved with respect of the SLG⁴⁵ and SRA⁰¹. It is indicates that this common characterization of cysteine residues does not specify the self-incompatibility response.