KSBB Journal
- Volume 5 Issue 2
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- Pages.175-182
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- 1990
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- 1225-7117(pISSN)
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- 2288-8268(eISSN)
Somatic Hybrids by Electro-Protoplast Fusion between N. tabacum and N. glutinosa
담배(N. tabacum)와 N. glutinosa 종간 원형질체 융합식물의 생성
Abstract
Protoplasts, isolated from leaf of N. tabacum NR-/SR+ and N. glottnosa were electrofused and divided with a plating efficiency of 30∼35% in AAPI 9M medium. Green callus lines were selected in protoplast-derived colonies on MSNO3 selection medium with 1.2mg/ml streptomycin sulfate on the basis of nitrate reductase proficiency and streptomycin resistance. Four putative hybrid plant lines regenerated from the green callus lines had intermediate morphology between that of parents with respect to floral shape, corolla length and ovate leaf blade. Zymograms of leaf peroxidase and esterase from these putative hybrid plant lines showed isozyme profiles derived from both parents and also, they exhibited additional and lost bands. Cytological analysis of two putative hybrid plant lines gave chromosome counts of 2n=66 in L22 and 2n=54 in L44 which were less than the expected number of N. tabacum(2n=48) and N. glutinosa(2n=24).
N. tabacum
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