Flowering Dynamic,Pollen Viability and Stigma Receptivity of Hippohae rhamnoides Linn.
Annotatsiya
[Objective] It provides the theory basis on compatiblity male plant selection cross breeding and selection of cultivars for Hippophae rhamnoides Linn.. [Method] The flowering phenology and characteristics of wind pollination of Hippophae rhamnoides Linn. cultivars introduced were investigated in field. We examined pollen viability,stigmatic receptivity and pollen production in this species respectively. [Result] The pollination period stretched from early May. The female flowering phase last about 10-12 d,male flowers flowering phase last about 12-15 d. The results of gravity slide indicated the highest pollen density appeared at about 20 m( Wucixiong) and 25 m( Alieyi) away of the pollen source. The pollen viability was higher than 90% at the blooming day. The pollen viability was significantly decreased with the increasing of reservation time under dry and wet conditions. The pollen viability could last about 4 d under dry condition,and significantly decreased from then,lost absolutely viability in 10th day. The pollen viability lost absolutely when reserved only 2 d under wet condition. The stigma had receptivity when second day after blooming,and the receptivity could last about 8 d. [Conclusion] Wucixiong and Alieyi are good pollination varieties.