Studies On Growth And Development Of Grafted Siraitia Grosvenorii Seedlings

This experiment used X1,X2,X3 and Siraitia grosvenorii as rootstocks and NongYuan-3 tissue culture Siraitia grosvenorii seedlings as the cion, studied the conditions of cultivating rootstock seedlings and the different effects of different rootstocks on growth , disease state , yield and fruit quality of Siraitia grosvenorii. Themain results showed as follow:1. Cultivating rootstock seedlingsThe results of pregermination test showed, pregermination with 25°C-35°C Variable temperature could remarkably enhanced germination energy and germination percentage of Siraitia grosvenorii seeds. The 20% worm-cast substrate cultivatedtreatment did the best growth state.2. Effects of rootstock on survival rate and growth of grafted Siraitia grosvenoriiseedlingsThe highest grafting survival rate was X3 rootstock, but difference grafting survival rate among the X2, X3 and Siraitia grosvenorii rootstocks were not remarkable. Seedlings grafted on X2 and Siraitia grosvenorii had better growth vigour, more leaves and stronger stem.3. Effects of rootstocks on growth of grafted Siraitia grosvenorii seedlingsSeedlings grafted on X3 and Siraitia grosvenorii rootstocks grew more quickly in early stage. Growth vigour of tissue culture seedlings and seedlings grafted on X2 were lower. Seedlings grafted on X1 rootstock grew most slowly.Seedlings grafted on X3 had not blossomed. Tissue culture seedlings and seedlings grafted on X2 had higher blooming rate. Seedlings grafted on X2 had the biggest amount of flowers.Fruits of tissue culture seedlings grew quickly, their fruits were the biggest. Fruit of...