新铁炮百合组织培养和快速繁殖研究

以日本新铁炮百合鳞茎及叶为外植体成功获得再生植株,并建立了快速无性繁殖系。鳞片和叶的最佳诱导培养基分别为MS＋0．4－1mg/L BA 0.2mg/L NAA;MS 0.1mg/L(或0．5mg/L)BA＋0.1mg/L NAA或0．5mg/L IBA。芽增殖培养基选MS＋0．2－0．5mg/L BA 0.1mg/L NAA或0．2mg/L IBA。生根培养基为1／2MS＋0．1mg/L IBA 0.1%活性炭。     

百合栽培品种资源的RAPD分析

基于随机扩增多态DNA(RADP)方法分析了来自3个百合品系的15个栽培百合品种的遗传多样性和亲缘关系.从156个引物中筛选出15个引物,在检测的218个位点中,216个位点为遗传多态位点(99.08%).聚类分析结果表明:来自3个品系的百合栽培品种在遗传关系上明显地聚为3类;亚洲百合品系和东方百合品系的品种有较近的亲缘关系,二者和铁炮百合品系的品种亲缘关系较远;在同一品系内部,相同花色的百合品种具有较近的亲缘关系.     

百合子房的组织培养

以百合子房为材料进行组培快繁，得到子房诱导成愈伤组织的最适培养基为ＭＳ＋ＢＡ１ｍｇ／Ｌ＋ＮＡＡ０．５ｍｇ／Ｌ：适合诱导分化的培养基为ＭＳ＋ＢＡ０．５ｍｇ／Ｌ＋ＩＡＡ０．５ｍｇ／Ｌ；适合生根的培养基为ＭＳ＋ＢＡ０．２ｍｇ／Ｌ＋ＩＡＡ１ｍｇ／Ｌ．     

复合盐碱胁迫对OT百合生长和生理特性的影响

【目的】揭示百合在复合盐碱胁迫下的生理响应特征。【方法】以OT杂种系百合‘红色宫殿’(Lilium ‘Red Palace’)种球为试验材料,用不同浓度的单盐(NaCl)、中性混合盐[m(NaCl):m(Na₂SO₄)=1:2]和碱性混合盐[m(NaCl): m(Na₂SO₄):m(Na₂CO₃):m(NaHCO₃)=5:23:9:3)进行胁迫处理,蒸馏水为对照(CK)。测定百合叶片及根、茎的形态指标、生物量、根冠比、相对电导率、丙二醛含量、可溶性蛋白含量、根系活力、相对含水量以及Na⁺、K⁺浓度变化。【结果】①与CK相比,3个不同盐碱处理组的百合地下生物量、总生物量和根冠比均有所降低,地上生物量和各形态指标均表现出对盐碱胁迫低促高抑的特点。②盐碱胁迫导致百合相对电导率、丙二醛含量上升;低浓胁迫促使百合根系活力升高,可溶性蛋白含量上升。当盐碱浓度高于一定值后,百合根系活力和可溶性蛋白含量均呈下降趋势。③各处理百合幼苗地上、地下的K⁺与Na⁺含量比值(记为K⁺/Na⁺值)均下降,其中碱性混合盐处理下K⁺/Na⁺值比中性混合盐和单盐处理的低。④双因素方差分析表明,盐浓度对各项指标的影响大于盐组合,且盐浓度、盐组合及其交互作用对鳞茎直径、总鲜质量、总干质量、根冠比、根系活力及相对含水量均存在极显著影响。【结论】3个盐碱处理组对百合的胁迫程度由强到弱依次为碱性混合盐>中性混合盐>单盐,这一结果可为选择适宜百合生长的土壤提供一定的理论依据。     

泸定百合居群染色体形态研究

研究了７个泸这百合居群的染色体形态变异,结果如下：（１）南涧居群Ｋ１＝２ｎ＝２ｘ＝２４＝２ｍ（２ＳＡＴ）＋２ｍ＋４ｓｔ（２ＳＡＴ）＋４ｓｔ＋１２ｔ,染色体长度比２．６２,平均臂比８．６３,Ａｓ,Ｋ值８１．２０％。（２）弥勒居群Ｋ２＝２ｎ＝２ｘ＝２４＝２ｍ（２ＳＡＴ）＋２ｍ（２ＳＡＴ）＋２ｓｔ（２ＳＡＴ）＋２ｓｔ＋１４ｔ,染色体长度比２．５７,平均臂比８．６９,Ａｓ．Ｋ．值８１．１２％。（３）峨眉居     

百合的组织培养与扦插繁殖

对百合品种‘雷山2号’的组织培养和扦插繁殖进行了初步的研究，结果表明：中层和内层的繁殖系数高于外层鳞片．扦插的总体繁殖系数为125，组织培养的繁殖系数为177，但外层鳞片组培时形成分化芽的能力很弱，而在扦插中形成子球的能力很强．     

Construction of single-chromosome DNA library fromLilium regale Wilson

A protocol of simple rapid microdissection of single-chromosome, amplification and cloning of its DNA fromLilium regale Wilson is described. Single-chromosome, microdissected by micromanipulator, was put into a 0.5 mL Eppendorf tube and digested with Sau3A, and then the Sau3A linker adaptors were ligated to the ends of DNA fragments. After 2 rounds of PCR amplification with one chain of linker adaptor as primer, the PCR products thus obtained have a length of 300–2500 base pairs (bp) with predominant fragments at about 1000 bp. Southern blot analysis confirmed that the PCR products originated from the genome ofLilium regale Wilson. By cloning the amplification products from the second round of PCR, single-chromosome DNA library was constructed, in which about as many as 100000 recombinant clones were produced. A total number of 84 clones were analysed, and it was revealed that the inserts ranged in size from 300 to 1800 bp, with an average of780 bp. Compared with the methods described in other literature, this protocol, eliminating the need for enzymatic digestion and ligating micromanipulation of chromosomal DNA in nanoliter volumes, permits the efficient amplification of single chromosome (not tens of chromosomes as reported before) and the fragments (780 bp in average) cloned in this study are longer than those reported before (650 bp in average).     

百合鳞片离体形态发生过程中几种同工酶的变化

本研究利用组织培养技术，在附加１ｍｇ／ＬＩＢＡ和０．５ｍｇ／Ｌ６－ＢＡ的ＭＳ培养基上建立起兰州百合鳞片外植体体外器官发生实验系统。培养１０天左右，外植体上就可以诱导出小鳞茎，发生率为１００％。     

长白山区毛百合引种栽培试验及繁育技术

毛百合(Lilium dauricm)抗寒性强,是园林杂交育种的重要野生种源,具有较高经济价值.通过引种栽培试验,研究长白山区毛百合的形态学特征、地理分布、生态习性、繁育技术.结果发现:在长白山区,人工栽培毛百合的生长性状优于野生自然生长的毛百合;引种栽培后病害较多;有性繁殖与无性繁殖均可获得大量种源.