Generation and multiplication of plantlets from callus derived from Haplopappus gracilus (Nutt.) Gray and their karyotype analysis.
Generation and multiplication of plantlets from callus derived from Haplopappus gracilus (Nutt.) Gray and their karyotype analysis.
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来自 Haplopappus gracilus (Nutt.) Gray 愈伤组织的幼苗的产生和繁殖及其核型分析。
DOI:
10.1016/0168-9452(91)90240-9
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发表时间:
1991
期刊:
影响因子:
--
通讯作者:
Krikorian,AD
中科院分区:
文献类型:
--
作者:
Kann,RP;O'Connor,SA;Levine,HG;Krikorian,AD
Unopened flower heads ofHaplopappus gracilis(2n= 4) provided primary explants for callus production and subsequent induction of organized growth. Callus was initiated from small (3–5 mm in length) floral buds with benzylaminopurine (BAP) (44.4 μM; 10 mg/l) and naphthalene acetic acid (NAA) (0.54 μM; 0.1 mg/l). Lowering the BAP level to 4.44 μM (1 mg/l) but maintaining the NAA level, gave rise to organized but highly compressed shoot growing points from an otherwise undifferentiated callus mass. Shoots selected from such cultures were maintainable and could be proliferated by growing 1–1.5-cm stem tip cuttings on Murashige and Skoog basal medium (solidified with agar) containing 0.444 μM (0.1 mg/l) BAP and 0.054 μM (0.01 mg/l) NAA. The stem tip multiplication rates obtainable by these means permit reliable strategies for shoot multiplication or production of rooted plantlets. Prolonged subculture and maintenance of shoots on growth regulator-free medium leads to in vitro flowering and greatly reduces rooting capacity. Karyotype analysis of chromosomes from root tip cells at metaphase and chromosome measurements show that karyologically uniform plantlets (based on chromosome number and morphology) can be obtained.
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DOI:
--
发表时间:
1985
期刊:
影响因子:
--
作者:
R. C. Jackson
通讯作者:
R. C. Jackson
影响因子:
64.8
作者:
I. Ames;J. Mitra
通讯作者:
J. Mitra
影响因子:
1.9
作者:
T. Murashige;Maria Serpa;Jean Jones
通讯作者:
Jean Jones
影响因子:
56.9
作者:
R. C. Jackson
通讯作者:
R. C. Jackson
DOI:
--
发表时间:
1985
期刊:
影响因子:
--
作者:
R. Tanaka;K. Taniguchi;Y. Kamisugi
通讯作者:
Y. Kamisugi