摘要
对保存在国家种质武汉水生蔬菜资源圃中的芋属种质资源的开花结实状况调查表明:在自然条件下,所有滇南芋(2n=2x)中的野芋和花用芋资源全部开花;芋开花状况表现为:魁芋(2n=2x)、多头芋(2n=3x)、魁子兼用芋(2n=3x)都不开花;国内多子芋中,紫柄多子芋(2n=3x)都不开花,乌绿柄多子芋(2n=3x)和绿柄多子芋(2n=3x)有部分品种开花,但开花的品种具有不确定性;来源于东南亚国家的多子芋中,绿柄多子芋(2n=2x)开花率高,花期长,另有1份紫柄多子芋(2n=3x)开花,与国内多子芋(2n=3x)差异较大。开花率表现为东南亚多子芋等于或高于国内芋;国内芋中,二倍体的大于三倍体的。花期最长的是东南亚绿柄多子芋(2n=2x),国内芋中,二倍体的花期长于三倍体的。乌绿柄多子芋和花用芋的芽色都为红色,属于短附属器,其余类型的芽色为白色,属于长附属器。在自然条件下,仅有2份紫柄野芋种质结实,其他种质未见结实。本研究还对不同类型芋的始花期、末花期、花期、单株花序丛数、单个叶轴花序数、单株总花序数和佛焰苞管部、佛焰苞檐部、附属器、雄花序、中性花序、雌花序的长度等进行了比较。
Investigation of flowering and seeding status of taro （Colocaia） germplasm resources which conserved in Wuhan National Germplasm Repository for Aquatic Vegetables were conducted. It indicated that： （ 1 ） In natural condition, all germplasm of previous C. esculenta （L.） var. antiquorum and C. tonoimo Nakai, which now belonged to Colocasia antiquorum （L.） Schott（2n = 2x） , flowered. The flowering status of that of Colocasia escu- lenta （L.） Schott presented that： All germplasm of headed-taro （2n = 2x） , taro with multi-headed taro （2n = 3x） , taro used with corm and cormels （2n =3x） did not flower. In Chinese taro with numerous cormels, purple-petiole- taro （2n = 3x） did not flower. Red-purple-green-petiole-taro （2n = 3x） and green-petiole-taro （2n = 3x） flowered partly, whose flowering varieties were uncertain. In taro with numerous cormels which came from Southeast Asia, the flowering phase and flowering rate of green-petiole-taro （2n = 2x） were high and long respectly. In addition, one accection of purple-petiole-taro （2n = 3x） flower, which differed from Chinese taro with numerous cormels（2n =3x）. The flowering rate of taro with numerous cormels which came from Southeast Asia was equal to or higher than that of Chinese taro. In Chinese taro, the flowering rate of diploid was more than that of triploid. The period of flowering of green-petiole-taro （2n = 2x） which came from Southeast Asia was the longest, In Chinese taro, diploid was more than that of triploid. （2） Red-purple-green-petiole-taro with numerous cormels and taro used with inflo-rescence, whose buds were red, belonged to taro with short appendage, and the others, whose buds were white, belonged to taro with long appendage. （3） In natural condition, only 2 accessions of germplasm of C. antiquorum （L.） Schott （2n =2x）, whose petiole was purple, seeded. But the others did not seed. （4） The comparison of first flowering date, last flowering date, flowering phase, numb
出处
《植物遗传资源学报》
CAS
CSCD
北大核心
2011年第5期811-815,819,共6页
Journal of Plant Genetic Resources
基金
国家农作物种质资源保护项目
农业部蔬菜遗传与生理重点开放实验室项目
国家公益性行业(农业)科研专项经费项目(200903017-03)
