Effect Of Wheat, Oilseed Rape And Broad Bean On Germination And Seedling Growth Of Gentiana Macrophylla Seeds

Gentiana macrophylla is one of important Chinese traditional medicine in our country,wild gentiana macrophylla widely collected,resulting in a decline in output of wild Gentiana macrophylla,radix Gentianae macrophyllae state of scarce resources.Gentiana macrophylla artificial cultivation is imminent. This experiment adopts the indoor petri dish bioassay method and pot experiment, explore wheat, rape and broad bean allelopathy of gentiana macrophylla,for the selection of Gentiana macrophylla intercropped crops and provides the theory basis for improve the quality of radix gentianae macrophyllae artificial cultivationThe main results were as follows:1. The air-dried samples of the wheat leaf water extract and methanol extract of radix Gentianae macrophyllae seeds germination and radicle growth have weaker inhibition;Air-dried samples of the broad bean leaf water extract and methanol extract and root secretion germination and radicle growth of Gentiana macrophylla had weak inhibitory effect, air-dried samples of the rape leaf water extract and methanol extract and root secretion germination and radicle gro2. As the nearer the crop root samples, gentianae macrophyllae from the stronger the inhibition, rape performance is more outstanding.Cut crop Gen Liang increase,of Gentiana macrophylla enhanced seed germination inhibition.Crop wheat root secretion of Gentiana macrophylla minimum inhibition of seed germination, broad beans, rape the strongest inhibitory effect.3. Wheat root secretion from aqueous extract of radix Gentianae macrophyllae has a slight promote seed germination and growth of radicle,and along with the increase in water phase extraction times,promote the weaker. Wheat root secretion ester liquid phase extraction of radix gentianae macrophyllae seed germination effect is not obvious;Broad bean root secretion germination and radicle growth inhibitory effect of radix gentianae macrophyllae weaker; Rape root secretion of gentiana macrophylla seed germination and radicle growth has obvious inhibitory effect, and along with the increase in water phase and ester phase extraction times, inhibit the weaker. Wheat root secretion from acetone extract of radix gentianae macrophyllae seed germination have a faint, broad bean root secretion from acetone extract of radix gentianae macrophyllae seed germination have lower inhibition, rape root secretion from acetone extract of radix Gentianae macrophyllae seed germination have stronger inhibitory effect.4. Interplanting rape and beans can significantly reduce the roots of Gentiana macrophylla seedling dry weight and chlorophyll content, the role of intercropped wheat is smaller.