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Characteristics of Phytolith on Rice Leaf
Eui Shik Rha,Jin Key Kim 韓國作物學會 1998 Korean journal of crop science Vol.43 No.4
Silica bodies (phytoliths) are becoming of wide use for pedology, archaeology, paleobotany and paleoecology in botany. This study investigated morphological differences of silica bodies in the lamina of wild, indica type, and japonica type rice. Phytoliths in the epidermis of lamina showed noticeable difference among tested plants. Besides, there were also significant differences in the shape and distribution of the silica bodies around stomata and trichomes. Silica bodies in the lamina of the rice plants could be used to classify subspecies of Oryza genus.
Direct Multipropagation through Organogenesis from Nodal Explants of Anoectochilus formosanus Hayata
Eui Shik Rha,Hyun Soon Kim,Nam Hee Yoo 한국자원식물학회 1998 Plant Resources Vol.1 No.1
To establish direct multipropagation through organogenesis from nodal explants of Anveilochilus formosunus Hayata, the nodes were cultured on LS medium containing various concentrations of 6-benzyladenine(BA). High plant regeneration and adventitious bud formation were obtained from supplemented with 4.0mg/l of BA. Plant height was promoted by adding 0.3% activated charcoal. Plantlet regeneration capacity from nodes was depended on nodal parts on the stem, upper position was the best comparing with intermediate and lower.
Genotype Difference of Plant Regeneration from Dormant Bud Culture in Colocasia esculenta Schott.
Eui Shik Rha,Nam Hee Yoo,Hyun Soon Kim 한국자원식물학회 1999 Plant Resources Vol.2 No.2
This study was conducted to obtain the basic breeding information of Colocasia esculenta Schott. Effect of supplemental plant growth regulators and genotype difference were investigated on dormant bud tissue for proliferation. The plant regeneration ratio, plant height and root length were the best upon mixed treatment of 0.8mg/L IAA and 2.0mg/L zeatin. Both leaf weight and root weight were heavy upon culture in a dark condition. The leaf and root weights were heaviest in 6% sucrose concentrations. In several collected area the heaviest one was Binnangxin and then in the order of Suwon, Wanju and Puan. Genotype differences of tuber diameter and tuber weight were found in Suwon. Tuber weight was found in the order of Suwon(862mg)>Wanju(723mg)>Puan(649mg)>Binnangxin (424mg).
In vitro Tissue Culture of Aloe arborescens Mill
Eui Shik Rha,Hyun Soon Kim,Seung Yeob Lee 한국자원식물학회 1998 Plant Resources Vol.1 No.2
Aloe in vitro culture was attempted to induce callus and regeneration ability from different explant sources onto MS medium with 0.5mg/l NAA plus 1.0mg/l BA. Anthers that no developed any callus and plant regeneration, while only four out of 274 filament explants induced calli at cut edge without regenerated plants. Twenty ovary explants regenerated four direct plantlets without via callus from the base of epidermal tissues. Regenerated plants on the root tip gave 2n=14 of chromosome numbers.