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首页> 外文会议>Proceedings of the international conference on germplasm of ornamentals >Floral Biology and Breeding System in Cardiocrinum giganteum (Liliaceae), a Perennial Bulbiferous Herb in Yunnan Province in China
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Floral Biology and Breeding System in Cardiocrinum giganteum (Liliaceae), a Perennial Bulbiferous Herb in Yunnan Province in China

机译：中国云南多年生球茎草本植物心形紫花菊的花卉生物学与育种系统

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Giant lily (Cardiocrinum giganteum) is a perennial bulbiferous herb of Liliaceae and an endemic species in the eastern Himalayan region, which has become one of the new flower crops because of its high ornamental value.The floral biology and breeding characteristics of C.giganteum were studied by monitoring floral characteristics, duration of flowering, phenology, flowering behavior, outcrossing index (OCI), pollen-ovule ratio (P/O), pollen viability, stigma receptivity and fruit sets under a series pollination treatment.The result showed that flowering occurred from early May to early July and the mean duration of flowering was 16 days per inflorescence containing 6 to 19 flowers, and every flower has a life span of 7-11 days.The flowers were bisexual, with dichogamy and spatial separation.However, some anthers of a small number of flowers were longer than or equal to the stigma, which were suitable for self-pollination.The flowers were protandrous; the pistils matured in the day of floral opening.The pollen viability peaked around 75％ after the pollen dispersed in 2 days, and its stigma had peroxidase activity from the third day after the anther loosing pollen until the end of flowering.The fruit setting rate of natural pollination was as high as 95％, that of artificial self-pollination 57.5％, and that of artificial xenogamy was as high as 100％, suggesting that C.giganteum is self-compatible.According to the artificial pollination experiments, OCI and P/O tests, the breeding system of C.giganteum was outcross and self-compatible, which needed pollinators.
机译：巨型百合（Cardiocrinum giganteum）是百合科多年生的球根草本植物，是喜马拉雅东部地区的特有种，由于其具有很高的观赏价值，已成为新的花卉作物之一。C.giganteum的花生物学和育种特性是通过在一系列授粉处理下监测花的特性，开花时间，物候，开花行为，异交指数（OCI），花粉-胚珠比（P / O），花粉生存力，柱头亲和力和坐果来进行研究。发生于5月初至7月初，平均开花时间为每花序16天，有6至19朵花，每朵花的寿命为7-11天，这些花是双性恋的，有双歧和空间分隔。少数花的一些花药长于或等于柱头，适合自花授粉。雌蕊在花开放的那一天成熟。花粉在两天内散开后，花粉的活力达到75％左右的峰值，并且从花药散开花粉的第三天到开花结束，其柱头具有过氧化物酶活性。自然授粉率高达95％，人工自花授粉率达57.5％，人工异花授粉率高达100％，表明长寿花是自交亲和性的。通过P / O测试，C.giganteum的育种系统是异质的并且是自相容的，因此需要传粉媒介。

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