肉苁蓉寄生数目对肉苁蓉种子产量和质量的影响

以梭梭和肉苁蓉为试验材料,在单株梭梭上寄生1~7个肉苁蓉,研究肉苁蓉寄生数目对肉苁蓉种子产量和质量的影响。结果表明:随着单株梭梭上寄生肉苁蓉数目的增加,1)单株梭梭-肉苁蓉复合体生物量降低6.1%~10.5%;2)单株梭梭体内非结构性碳水化合物累积量降低23.2%~30.7%,而肉苁蓉种子中非结构性碳水化合物累积量则提高143.8%~331.3%;3)单株梭梭上寄生的肉苁蓉种子产量提高170.3%~338.1%。结果表明适宜的肉苁蓉寄生数目能够通过优化非结构性碳水化合物的分配来提高肉苁蓉种子产量。

Effect of parasitizing different numbers of Cistanche deserticola on the seed yield and quality of C.deserticola

Haloxylon ammodendron and Cistanche deserticola were used to study the effect of parasitizing different numbers of C.deserticola on the seed yield and quality of C.deserticola.The results showed that:When the number of C.deserticola parasitized on H.ammodendron per plant within the range of one to seven, with the number of C.deserticola increased:1) The biomass of H.ammodendron- C.deserticola decreased 6.1% to 10.5%.2) The accumulation of non-structural carbohydrate of H.ammodendron per plant decreased 23.2% to 30.7%, while the accumulation of non-structural carbohydrate of C.deserticola seed improved 143.8% to 331.3%.3) The seed yield of C.deserticola on H.ammodendron parasitized by C.deserticola per plant improved 170.3% to 338.1%.These findings suggested that the appropriate number of C.deserticola parasitized on H.ammodendron could improve the seed yield of C.deserticola by optimizing the distribution of non-structural carbohydrate.