天然油脂和凡士林对西瓜嫁接砧木葫芦顶芽生长点的抑制作用

Inhibition effect of natural oil and vaseline on shoot buds of lagenaria rootstock for grafting watermelon

为了抑制西瓜顶插接砧木侧芽萌蘖,减少苗期手工抹除砧木侧芽的工作量,使用天然油脂(菜籽油、大豆油、花生油)与凡士林在嫁接前及嫁接苗成活后分别处理长颈葫芦砧木顶芽生长点,研究天然油脂与凡士林对砧木生长点抑制的效果。结果表明,使用天然油脂和凡士林处理显著降低了接穗成活率及接穗株高,但也显著降低了砧木侧芽萌发率及平均侧芽叶面积,嫁接14 d后,使用凡士林两批次处理的侧芽萌发率均为对照的39%,侧芽叶面积分别为对照的34.3%和19.6%。所以,可使用天然油脂或凡士林来抑制砧木侧芽生长,以减少大批量顶插接育苗工作时手工抹除砧木侧芽的用工量。

Natural oils(rapeseed oil, soybean oil and peanut oil)and vaseline were used to treat lagenaria rootstock shoot buds to suppress side bud growth and reduce the workload of manual removal of rootstock buds before and after grafting.The results showed that both natural oil and vaseline treatments significantly reduced the scion survival rate, scion height,rootstock shoot bud rate and the average rootstock leaf area. After 14 days of grafting, the treatment with vaseline on two batches had the best effect, the rootstock shoot bud development rate was 39% of that of the control, and the rootstock leaf area was 34.3% and 19.6% of that of the control. natural oils or vaseline can be used to inhibit the growth of shoot buds of rootstock, and therefore to reduce the amount of labor for manual remove of side shoot buds of rootstock before and after grafting using top insertion method.