TDZ（Thidiazuron）作为细胞分裂素类物质应用于不同基因型芋的组织培养中。与BA相比，0.1mg L-1的TDZ能更有效地诱导四个基因型芋茎尖的萌动、生长，大量增殖丛生芽，促进组培苗根系发生，提高驯化成活率。浓度为0.01mg·L-1的TDZ能诱导魁芋类型的芋离体叶片切块产生再生芽点，转接后可增殖不定芽并形成再生植株。不同基因型以及不同TDZ浓度在芋组织培养中表现出不同程度的差异。

为了探索黑籽南瓜（Cucurbita fieifotia Boucbé)对黄瓜（Cucumis satieus Lian.)生长的影响，以前者为砧木，‘津绿21-1’和‘津研4号’2个黄瓜品种为接穗。以自根植株为对照，对嫁接植株的形态指标、抗病性、单株产量及叶片营养元素含量进行研究。结果表明，嫁接植株在不同时期的形态指标均高于自根植株；嫁接黄瓜的单株产量显著高于自根黄瓜；枯萎病、病毒病。霜霉病和灰霉病4种病害在嫁接植株上的病情指数和发病率均低于自根植株；2个品种嫁接植株叶片的N、P、K、Ca和Mg含量均显著或极显著高于自根植株。结果表明，黑籽南瓜作为优良砧木可见显著促进黄瓜的生长结实，提高其抗病性及对营养元素的吸收能力。

1984～1988年以87个不结球白菜自（近）交系为原始材料，进行了芜菁花叶病毒（TuMV）抗性是鉴定，并选留无症或轻症单株进行了4轮系谱选择。试验结果表明，未经筛选的原始材料均为高感，在高感群体中选择无症或轻症单株进行系谱选择后，抗病性逐渐提高，选择效应随品种和世代而异。经4轮系谱选择后获得15个抗芜菁花叶病毒的株系，作为抗源加以保存和有效利用。

1984～1989年在对不结球白菜种质源抗芜菁花叶病毒（TuMV）鉴定的基础上，利用杂种优势育种技术，以抗病矮脚黄雄性不育两用系为母本、抗病矮脚黄和雪克青自交系为父本，选育出综合性优良的矮抗二号和矮抗三号新品种。其特点：（1）丰产：生产试验平均产量分别达52.4和56.6t/hm2，比对照矮脚黄分别增产29.9%和40.2%；（2）抗病：两品种TuMV和霜霉病人工是鉴定病情指数比对照分别降低79.5%、98.7%和69.8%、88.0%；（3）优质；矮抗二号叶片重/叶柄重比对照提高17.0%，矮抗三号略低于对照，但其Ve、灰分、叶片和叶柄中可溶性固形物含量等主要营养成份均高于对照，且纤维素含量低；（4）商品性好：矮抗二号叶柄短且宽，色白。矮抗三号叶柄短且宽，色绿白，分别符合全国大部分喜食食白梗菜和青梗菜两大类型地区的消费习惯。

The effect of 80 mmol•L-1 stress by excess of calcium nitrate [Ca(NO3)2] on biomass production, oxidative damage, antioxidant enzymes activities and polyamine contents in leaves of grafted and non-grafted eggplant (Solanum melongena L.) seedlings were studied, in which grafted plants were grafted on a salinity tolerant rootstock (Solanum torvum Swartz). The results showed that on the 15th day of treatment, the biomass production reduction of non-grafted seedlings was significantly higher than that of grafted seedlings. Under stress by excess of Ca(NO3)2, superoxide anion radical (O2•¯) producing rate, electrolyte leakage percentage, contents of hydrogen peroxide (H2O2) and malondialdehyde (MDA) of non-grafted seedlings were significantly higher than those of grafted seedlings, but activities of superoxide dismutase (SOD, EC 1.15.1.1), peroxidase (POD, EC 1.11.1.7), ascorbate peroxidase (APX, EC 1.11.1.11) and glutathione reductase (GR, EC 1.6.4.2) of grafted seedlings were significantly higher than those of non-grafted seedlings, moreover, contents of free, soluble conjugated and insoluble bound polyamines of grafted seedlings were significantly higher than those of non-grafted seedlings, and activities of diamine oxidase (DAO, EC 1.4.3.6) and polyamine oxidase (PAO, EC 1.5.3.3) of grafted seedlings were significantly lower than those of non-grafted seedlings. The possible roles of antioxidant enzymes and polyamines in protective mechanism of grafted eggplant seedlings to stress by excess of Ca(NO3)2 were discussed.