嫁接对苦瓜在水渍条件下的产量及某些生理特性的影响

Effects of Grafting on the Yield and some Physiological Characteristics of Bit ter Gourd Grown under Waterlogging

以有棱丝瓜、无棱丝瓜、黑籽南瓜和瓠瓜作砧木,苦瓜作接穗进行嫁接栽培试验.有棱丝瓜作砧木插接法的嫁接成活率最高,达92.66%.有棱丝瓜和黑籽南瓜作砧木的苦瓜嫁接苗比自根苗提早进入开花结果期.水渍条件下两种砧木嫁接植株比自根苗植株分别增产36.5%和 33.7%,同时以有棱丝瓜作砧木的嫁接植株的叶绿素、氮、磷、钾含量和伤流量以及植株体内保护性酶(SOD、POD、CAT)的活性均大于自根苗植株和以黑籽南瓜作砧木的嫁接植株,而膜脂过氧化产物(MDA)的含量最低.

The survial rate of graftingbitter gourd on Luffa acutangula rootstock using inversion-grafting method was 92.66%. It was highest among all the grafting treatments. Flowering and fruit-setti ng stage in the grafted plants using Luffa acutangula and Cucurbita ficif olia as rootstock was earlier than that in the non-grafted bitter gourd. The yield of grafted plants on Luffa acutangula and Cucurbita ficifolia was 36.5% and 33.7% higher than that of non-grafted bitter gourd re spectively. The bleeding quantity,chlorophyll content,nitrogen (N) content,ph osphorus (P) content,potassium (K) content and the activity of protective enzym es such as superoxide dismutase (SOD),peroxidase (POD),catalase (CAT) in the g rafted plants on Luffa acutangule rootstock were higher than those of no n-grafted bitter gourd and those of grafted plants on Cucrbita ficifolia r ootstock respectively. However,the activity of malondialehyele (MDA) in the grafted plants on Laffa Acutangula rootstock was the lowest.