【作者】 金立敏；

【导师】 黄保健； 周玉珍；

【作者基本信息】 南京农业大学 ， 农业推广， 2011， 硕士

【摘要】 本文主要根据市场需求筛选出适合苏州地区栽培的大花萱草品种,对筛选出的大花萱草进行人工制种与育苗技术研究,主要研究结果如下：1.对引进的207份大花萱草材料进行跟踪记录,通过对花色、抗性、植株高度、花期长短等性状的考评,筛选出适合苏州地区生长优良的品种16个,其中常绿品种5个,大花品种6个、长花期品种2个、矮化品种1个、复瓣品种2个。2.对筛选出的大花萱草优良品种自交与杂交组合结实率的统计与分析,结果表明杂交组合结实率与父母本的选择有关。sf-6与j-1这两个品种无论正交还是反交,结实率都比其他品种高。而n-4、p-24、nz-51、sf-2、nzy-1无论采用大田栽培或设施栽培、人工授粉或天然授粉均不结实；在结实的品种中,除sf-6这个品种外,其他品种人工授粉结实率高于开放性授粉；设施内栽培的结实率高于大田栽培的结实率。3.在所测量的11个大花萱草品种中,果实大小有差异,果实长轴长在1.35-3.13cm之间,果实的短轴长在0.98-2.45cm之间、单个果实内的种子数量在3-11颗,千粒重在28.0-86.2g之间。其中p-24的果实最大、单个果实的种子数量最多,种子的千粒重最重。4.不同品种的萱草的种子发芽率不同,品种中发芽率最高可达到70%,同一品种的在8月底播种发芽率最高,相同条件下,设施栽培中所得到的种子发芽率比大田中所得到的种子高。杂交品种不同采收时间相同播种日期,种子的发芽率差异不大,自交品种种子前期采收种子发芽率要高于后期。5.通过对j-1*sf-6、sf-2、n-5三个品种播种苗的调查,种子采收时间不同对苗的生长势不同,前期采摘的好于后期采摘,通过播种得到的sf-6这个品种的后代保持了母本的特性,变异性小,可以通过种子繁殖来获得大批量种苗。更多还原

【Abstract】 In this paper, Selected according to market demand for cultivation in Suzhou Hemerocallis,On the selected Hemerocallis seed production and breeding research, main conclusion following:1. The introduction of the 207 Hemerocallis track materials through color, resistance, plant height, flowering duration and other characteristics of the evaluation, identification of areas suitable for the growth of fine varieties of Suzhou,16, of which 5 species of evergreen, large 6 varieties of flowers, long flowering varieties 2,1 dwarf varieties,2 varieties of complex valve.2. On Hemerocallis inbred and hybrid varieties of seed set and Statistics, results showed that the crosses with parents of the seed set of the selection, sf-6 * j-1 have high seed setting rate than the other varieties. The n-4, p-24, nz-51, sf-2, nzy-1 regardless of field cultivation, or cultivation, artificial or natural pollination pollination are not strong; in solid varieties, in addition to sf-6 outside the breed Other varieties of artificial pollination is higher than open pollinated; facilities is higher than cultivated field cultivated fruit setting rate.3. Measured in Hemerocallis of 11 species, differences in fruit size, fruit length at the 1.35-3.13cm long axis between the short axis length of the fruit between the 0.98-2.45cm, the number of individual seeds within the fruit of 3 -11 stars, grain weight between the 28.0-86.2g. The fruits of which the largest p-24, the largest number of single fruit seeds, seed grain weight is the heaviest.4. Different varieties of seed germination Hemerocallis in different species germination rate can reach 70%, the same species planted in the highest germination rate by the end of August, under the same conditions, obtained by cultivation in the field in seed germination rates than obtained Seeds high. Hybrids in different sowing dates harvest the same time, the germination rate is insignificant, since the early delivery of seed germination to harvest than later.5. By j-1 * sf-6, sf-2, n-5 seedlings of three varieties of the investigation, the seed harvest at different times on different growth potential of seedlings, pre-picked a good pick at a later stage, obtained by sowing sf -6 descendants of this species to maintain the maternal characteristics, variability is small, you can get large quantities of seed to seed propagation.更多还原