Evaluation on compatibility of interspecific cross in part of the genus Rosa
Rosa xanthina f. normalis, Rosa davurica Pall., Rosa multiflora Thunb., Rosa marretii Levl., Rosa damascene Mill. which were wild Rosa germplasm had cold resistance and modern rose cultivars were selected as experimental materials. Wild Rosa species and modern rose interspecific incompatibility and overcoming method were studied through wild Rosa species and modern rose distant hybridization. The experiment consisted of 31 hybrids which pollinated 2 026 flowers, obtained 393 hybrid fruits, 452 hybrid seeds and 121 hybrid seedlings. The results showed that there was significantly different pollen germination rate between wild Rosa species and moder rose cultivars. Pollen germination rate and fruit setting rate showed some correlation. Distant hybridization showed a high degree of incompatibility. Repeat pollination, hormone treatment could be used to overcome distant hybridization incompatibility. The latter effect was remarkable. There was large differences in reciprocal cross seed setting rate. Modern rose cultivars hybridization affinity performance were also different.
NETL
NSTL
万方数据
维普
