Effects of Different Substrates on Rooting of Melastoma dodecandrum Cuttings
Cutting experiments were carried out with 10 different ratios of fine vermiculite,coarse vermiculite,peat soil and perlite as substrates,and the annual unlignified twigs of Melastoma dodecandrum as cuttings.The root ana-lyzer was used to observe the morphology of the rooting parts of the cuttings,and the growth status was measured to analyze the effects of different substrates on the rooting of Melastoma dodecandrum cuttings.The results showed as the following four aspects.(1)The four substrates equally mixed showed the best rooting traits of Melastoma do-decandrum cuttings,and the rooting rate,length,surface area,volume,number of root tips and number of branches reached 89％,250.07 cm,42.94 cm2,1.51cm3,568.13 roots and 507.50 branches,respectively.(2)Melastoma do-decandrum cuttings should choose loose materials such as vermiculite as the substrates,and avoid using peat soil.(3)In the single factor experiment,the rooting rates of fine vermiculite and peat soil cuttings were the highest(100％),followed by coarse vermiculite(93.75％),and the rooting rate of perlite matrix was the lowest(81.25％).(4)The average length of fine vermiculite cuttings was the longest(301.56 cm),the average surface area was the largest(53.69 cm2),the average number of root tips was the largest(488.06)and the average number of branches was the largest(600.88),significantly different from the effects of other substrate cuttings(P＜0.01).The fine vermiculite with better water and air permeability is beneficial to the mass production of Melastoma dodecandrum cutting seedlings.
万方数据
维普
