关键词: 沙芥, 花粉, 萌发特性, 柱头可授性, 温度, 培养基

Abstract: Pollen germination characteristic of Pugionium cornutum (L.)Gaerner was evaluated by germination method on culture medium, its stigma receptivity was estimated by the hand cross-pollination and benzidine-H₂O₂ method. The results showed the optimal pollen germination of P.cornutum was on the culture medium added 20% sucrose and 0.001% boric acid. The effective temperature of pollen germination was from 15 ℃ to 38 ℃ and the optimal temperature was 25 ℃. The pollen germination rate was very higher from the biggest bud stage to 16 h after blooming, and the pollen viability was disappeared 48 h after blooming. The suitable condition of storing pollen was low temperature（4 ℃）, and storing period was 7 d. The stigma of P.cornutum had receptivity from 48 h before blooming to 96 h after blooming，the strong receptivity in 24—72 h after blooming.

Key words: Pugionium cornutum (L.) Gaertner, pollen, germination characteristic, stigma receptivity, temperature, medium