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以苹果优良矮化砧木‘JM7’ (Malus prunifolia×M. pumila ‘Malling 9’)为试材, 研究了基本培养基对试管苗增殖生长的影响、蔗糖浓度对试管苗生根的影响及基本培养基、细胞分裂素种类和浓度对离体叶片不定梢再生的影响。结果表明: 基本培养基MS比QL显著提高增殖梢数, 但QL比MS更有利于获得健壮生长的绿苗。3%蔗糖浓度比2%的不定根发生速度快。叶片不定梢再生最适宜的基本培养基是QL。在QL培养基上, 6-BA和TDZ对离体叶片不定梢再生率的影响无显著差异, 但6-BA诱导产生的不定芽在不定梢诱导培养基上可直接伸长生长形成不定梢, 而TDZ诱导产生的不定芽需转移到不加TDZ而加低浓度6-BA的培养基上形成伸长生长的不定梢。 相似文献
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早熟杏幼胚子叶再生不定梢 总被引:3,自引:0,他引:3
1 植物名称 杏 (Prunusarmeniaca)早熟品种“红荷包”。2 材料类别 幼胚子叶。3 培养条件 基本培养基为MS。不定梢诱导培养基 :( 1 )MS 6 BA5mg·L- 1 (单位下同 ) 2 ,4 D0 .2 ;( 2 )MS 6 BA 4.0 2 ,4 D 1 .0 ;( 3) 1 /2MS 6 BA 5 IBA 0 .3。不定梢增殖培养基为MS 6 BA 0 .5 IBA 0 .1。以上所有培养基都附加 3%蔗糖 ,pH调至 5.8。培养温度 ( 2 5± 2 )℃ ,光照 1 4h·d- 1 。4 生长与分化情况4.1 不定梢诱导接种方法 取红荷包杏幼果 (此时胚的PF1 值 =胚长 /种子长 … 相似文献
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仁用杏的组织培养与快速繁殖 总被引:4,自引:0,他引:4
1 植物名称 杏 (Prunusarmeniaca)品种仁用杏“龙王帽”。2 材料类别 休眠芽 (dormantbud)。3 培养条件 芽启动分化培养基 (buddifferentia tonmedium) :( 1 )MS + 6 BA 0 .5mg·L- 1 (单位下同 ) ;( 2 )MS + 6 BA 0 .5 +IBA 0 .1 ;( 3)WPM +6 BA 0 .5 ;( 4 )WPM + 6 BA 0 .5 +IBA 0 .1。增殖培养基 (budmultiplicationmedium) :( 5 )WPM + 6 BA 1 .0 +IBA 0 .5 ;( 6)WPM + 6 BA 1 .0 +IBA 0 .5+GA33 ;( 7)MS + 6 BA 1 .0 +IBA 0 .2 ;( 8)NN69+ 6 BA 0 .5 +IBA 0 .1 ;( 9)NN69+ 6 BA 1 .0 +IBA 0 .2。生根… 相似文献
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梨多倍体化对离体叶片不定梢再生能力的影响 总被引:1,自引:0,他引:1
以源于二倍体梨品种Fertility(Pyrus communis L.)通过秋水仙碱离体诱变体细胞染色体加倍获得的不同同源多倍体无性系为试材,以离体叶片为外植体,观察研究了不同倍性无性系叶片的不定梢再生能力。结果表明,多倍体的不定梢再生率显著低于二倍体的再生率。不同多倍体无性系的不定梢再生能力也存在显著差异。三倍体无性系3x-3和四倍体无性系4x-4不能诱导产生不定梢。表明器官发生能力下降或植物细胞全能性的丧失与细胞染色体多倍体化有关。 相似文献
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以酸枣无菌苗叶片为外植体,研究了培养条件对不定梢再生及不定梢玻璃化的影响.结果表明,叶片在加有细胞分裂素TDZ的诱导培养基(培养基Ⅰ)上连续培养,可诱导不定芽形成,但不能进一步发育成不定梢;而在诱导培养基Ⅰ上培养2周后转移到不加TDZ的培养基Ⅱ上,可获得不定芽伸长的不定梢.培养基Ⅱ的基本培养基组成影响不定芽(梢)的玻璃化症状:MS培养基产生玻璃化的不定芽(梢),而WPM培养基产生正常不定芽梢;光培养条件的变化对玻璃化症状的发生没有影响.不定芽(梢)玻璃化的发生可能与培养基中铵或硝酸铵的浓度有关,在不定芽伸长发育阶段,培养基中高浓度的铵导致了玻璃化苗的发生. 相似文献
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Using in vitro leaves of Zizyphus jujuba ‘Kongfusucui’ plantlet as explants,effects of culture method,phytohormone proportion and culture time on induction rate of adventitious shoot from leaves and effects of sucrose concentrations in rooting media on rooting of adventitious shoot were studied.The results show that induction rate of adventitious shoot by two-step culture method(firstly cultured on medium Ⅰ for four weeks then cultured on medium Ⅱ for three weeks) is significantly higher than that by one-step culture method(cultured continuously on medium Ⅰ for seven weeks).Phytohormone proportion in medium Ⅰ has an obviously influence on induction rate of adventitious shoot,which gradually increases with increasing of TDZ concentration in medium Ⅰ.And adding 1.0 mg·L-1 TDZ in medium Ⅰ leads to induction rate with above 80%.With culture time prolonging(cultured for 1,2,3 or 4 weeks on medium Ⅰ,respectively),induction rate increases gradually.Sucrose concentration has a significant effect on rooting of adventitious shoot,sucrose with higher concentration(30 g·L-1) is beneficial to rooting.According to induction rate and growth status of adventitious shoot,it is determined that optimal culture method of adventitious shoot induction from Z.jujuba ’Kongfusucui’ leaves is two-step culture method,that is,leaves firstly cultured on WPM medium containing 1.0 mg·L-1 TDZ and 0.5 mg·L-1 IAA for four weeks,and then cultured on WPM medium containing 0.5 mg·L-1 IAA and 1.0 mg·L-1 GA3 till adventitious shoot produced. 相似文献
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