共查询到19条相似文献,搜索用时 267 毫秒
1.
2.
3.
4.
5.
6.
7.
8.
9.
《河北林果研究》2017,(Z1)
为了明确月见草种子(Oenothera biennis L.)的萌发特性,试验研究了不同浸种时间、不同浓度GA3和6-BA对月见草种子萌发的影响。结果表明,用清水浸种,16h时种子发芽情况最好,发芽势和发芽率都最高,分别为57.00%和34.00%,比对照组分别提高了103.57%和126.67%;随着GA3浓度的升高,月见草种子的发芽率、发芽指数均呈先上升后下降趋势,400 mg/L时种子发芽率达到峰值,为68.67%,高于对照77.58%;400mg/L的GA3对月见草种子的萌发有更好的促进作用;6-BA对月见草种子萌发的最适浓度为100mg/L,发芽率达到56.67%,比对照提高了46.55%。 相似文献
10.
11.
12.
为了打破杜仲种子休眠,提高其发芽率,研究了温水浸种、植物生长调节剂浓度配比以及不同浸泡时间对杜仲种子催芽的影响。结果显示:50℃温水浸种和6-BA 100mg!L-1浸种均能显著提高杜仲种子的发芽率,其中6-BA100mg!L-1的催芽效果最好,发芽率达88%,比对照组高28%,发芽势为80%,比对照组高34%;其次,50℃、100mg!L-1IBA和150mg!L-1 GA3发芽率均达80%。 相似文献
13.
植物生长调节剂对油茶果实含油率的影响 总被引:7,自引:2,他引:7
以油茶优良无性系为材料,对其喷施植物生长调节剂,测定油茶果实含油率的变化情况.结果表明:不同生长调节剂对油茶鲜果含油率的影响差异很大,B-9、GA和乙烯利等3种生长调节剂对油茶鲜果含油量的提高有明显的促进作用,比对照增22.4%、16.2%和11.2%,喷施生长调节剂后,还可使油茶鲜果含油量的快速积累提前到9月上旬;叶面喷施GA和B-9可以促进油茶种仁含油量提高42.6%和40.4%,比对照增18.0%和11.9%;喷施稀土和NAA对提高种仁含油率有反作用;油茶鲜果出籽率在8月中旬到10月下旬期间,呈现马鞍形增长的趋势,但喷施生长调节剂对其作用不明显;油茶果实后熟期以不同生长调节剂处理,对茶果出油率和出干籽率提高有促进作用,喷施赤霉素加萘乙酸(GA NAA)和只喷施赤霉素(GA)的处理出油率最高达6.01%和5.95%,分别比对照增22.1%和20.9%. 相似文献
14.
15.
为找出可以加快刨花润楠苗木生长速度的生长调节剂,采用不同植物生长调节剂(PP_(333)、NAA、GA_3)及其不同浓度(0、60、120、240、480mg L~(-1))对刨花润楠幼苗进行叶面喷施试验,测定各处理后的苗高生长量,结果表明:PP_(333)阻碍苗木正常高生长,其余各种浓度的GA_3、NAA都有促进刨花润楠的苗木生长,以浓度240 mg L~(-1)GA_3或浓度480mg L~(-1) GA_3促进刨花润楠苗高生长作用最显著,浓度240mg L~(-1) NAA次之。 相似文献
16.
17.
In vitro culture of immature embryos from Koelreuteria bipinnata var. integrifoliola 总被引:1,自引:1,他引:0
For the mass production of Koelreuteria bipinnata var. integrifoliola with selected, hybrid or genetically engineered genotypes, one potentially desirable propagation strategy is based on embryo culture. The immature embryo development in vitro from K. bipinnata var. integrifoliola was studied under different conditions of embryo age, basic culture media and plant growth regulators. The results show that: 1) germination rate of grade 3 embryos in immature seeds with 0.6–0.8 cm diameter was 98.9%. The germination rate of grade 2 embryos in immature seeds with 0.4–0.6 cm diameter was 77.8% and the germination rate of grade 1 embryos in immature seeds with 0.4 cm diameter was 15.6%. 2) The amounts of macroelements in MS medium had no clear effect on the germination rate of immature grade 3 embryos and had a modest effect on plantlet growth, where the best medium was MS or 1/2 MS. The rates were all greater than 90%. 3) The germination rate of grade 3 embryos was greater than 87% when the medium contained a low concentration of NAA or no plant growth regulators at all and decreased markedly when BAP alone or BAP and NAA together were added to the media. We suggest that in vitro culture of immature embryos from K. bipinnata var. integrifoliola can be enhanced when a small amount of plant growth regulators is added. The addition of BAP has an adverse reaction to the germination and development of immature embryos. 相似文献
18.