| Camellia mongshanica Chang et Ye belongs to Camellia. of Theaceae. It has ornamental value and applied value in landscape. The tree shape and posture is straight and beautiful. The leaves are luster deep green and its flowers are red. But based on the field investigation, the growth environment of wild resources of Camellia mongshanica Chang et Ye is too bad to grow well, and the distribution area is becoming narrow as well as the population is few, so it is very pressing to study breeding of it. The investigation and study results were summarized as follows:(1) The wild resources of Camellia mongshanica Chang et Ye are extinct gradually,and the number of seeding are more and more scarce in danger of extinction. Besides, their distribution area is becoming narrow and the ability of natural regeneration is weak.Moreover, because of its difficult pollination lead to the low seeding rate and the difficult natural multiplicative. So it is necessary to introduce and propagate for Camellia mongshanica Chang et Ye. And planted them back to the wooded mountain as well as improve the population by the way of artificial cultivation to improve the status of downfall gradually.(2) Camellia mongshanica Chang et Ye is a kind of shade-tolerant plant, and its ability to resist cold is strong. Because there are high mountains and sharp in some growth environment and the water retention of plants is poor, the root has strong conducting tissue to transport moisture and absorb nutrition. The branch has strong bundle system and fiber sclerenchyma so that its trunk and branches is straight and the mechanical strength is strong.It can help to resist the external force injury. The leaves are thick and finds that the cuticle,palisade tissue and spongy tissue are thicker than other Camellia by anatomy. It’s benefit for leaves to reduce water dissipation, improve the water retaining capacity of leaves and photosynthesis. It also meant that shade environment is suited for Camellia mongshanicaChang et Ye growth.(3) The rooting mechanism of Camellia mongshanica Chang et Ye belongs to callus rooting type, it is meant that the adventitious roots by Cutting are all growth from callus.IBA can more significantly increase the rate of callus, survival and rooting than NAA and ABT, which the highest rate can reach 36.67%, 33.33%, 33.33% respectively. Morewhile,at the situation of concentration of NAA is 300mg/L and treatment time 60 min, it also can keep the higher callus rate and survival rate, which both reach 30%.(4) Besides, in the matrix experiment, 7(A3B3C2)(yellow soil : nutrient soil = 7:1,with the branch has one bud and concentration of ABT is 600mg/L) is the treatment combination of the highest callus rate and survival rate, which both over 40%. While the highest rooting rate that reach 33.33% is 6(A2B2C3)(ellow soil : nutrient soil = 4:1, with the branch has two to four buds and concentration of ABT is 900mg/L). Interfused perlite light media into matrix, and the treatment combination of the highest survival rate and callus rate is 1(A1B2C2)(yellow soil : nutrient soil : perlite = 2:2:1, with the branch has two to four buds and concentration of ABT is 600mg/L), which reach 80% and 66.67% respectively.Meanwhile, higher concentration(600mg/L-900mg/L) can make up for the deficiency of the number of terminal buds to some extent, increasing the rooting rate of Camellia mongshanica Chang et Ye.(5) Camellia mongshanica Chang et Ye has ornamental value in landscaping. The application forms are very rich, such as isolated planting, opposite planting, jungle planting and crowd planting. The shape of the tree, the leaves and the flowers are all beautiful.Meanwhile, it can be used with other plants and buildings and has application prospect in landscaping. |
