TITLE:
A Method for Prolonging Culturing Time of Banana Seedling in Nursery Shed
AUTHORS:
Shenghe Chang, Zhengjing Wu, Qi Zeng, Jingyi Zhang, Wei Sun, Lan Qiao, Haiyan Shu
KEYWORDS:
Banana, Tissue-Culturing Seedling, Plant Retardant, Gibberellin
JOURNAL NAME:
Advances in Bioscience and Biotechnology,
Vol.10 No.5,
May
23,
2019
ABSTRACT: Banana industry plays important roles in the
economics of southern China, where is always blown by typhoon in summer and autumn. After typhoon passed through, fresh
banana seedlings are often required. That is a problem for companies on
culturing banana seedling, since
culturing banana seedlings takes about four months and typhoon cannot be
predicted so early. If the growth of banana seedlings can be slowed down and
the seedlings can be cultured in nursery shed for more time, this problem will
be solved. In this research, seven treatments (paclobutrazol, diniconazole, paclobutrazol + brassins, paclobutrazol + diethyl aminoethyl hexanoate,
diniconazole + brassins, diniconazole + diethyl aminoethyl
hexanoate, chlormequat chloride) were performed on banana seedlings and the
growth was measured. Results showed that in all of the treatments, the values
of plant height, leaf length, pseudostem diameters, root length, root weight,
root volume, fresh weight of above-ground tissues and fresh weight of seedlings
were significantly less than those corresponding values of control. The
reducing powers of roots of seedlings sprayed with paclobutrazol and paclobutrazol
+ diethyl aminoethyl hexanoate were remarkably higher than those of seedlings
treated with water. Total chlorophyll content in leaves of seedlings sprayed
with paclobutrazol was remarkably higher than that of seedlings treated with
water. Total chlorophyll contents in leaves of seedlings treated with paclobutrazol
+ diethyl aminoethyl hexanoate and chlormequat chloride were lower than those
of control. For delaying the growth of banana seedlings, chlormequat chloride
was the best among the seven treatments. The mechanism might be that the enzyme
CPP-synthase in seedlings was inhibited by chlormequat chloride.