The role of GA, IAA and BAP in the regulation of in vitro shoot growth and microtuberization in potato
2005
Zhang, Z. | Zhou, W.,[email protected] | Li, H.,Zhejiang University, Hangzhou (China). Inst. of Crop Science
The effect of auxin, GA and BAP on potato shoot growth and tuberization was investigated under in vitro condition. The shoot length of potato explants increased with the increasing of concentrations (0.5-10 mg/cubic dm) of IAA treatment especially with the addition of GA3 (0.5 mg/cubic dm), but was inhibited by BAP (5 mg/cubic dm). The root number and root fresh weight of potato explants increased with the increasing of IAA levels either in the presence of GA3 (treatment IAA+GA) or not (IAA alone). However, no root was observed in the treatment IAA+BAP, instead there were brown swollen calli formed around the basal cut surface of the explants. The addition of GA3 remarkably increased the fresh weight and diameter of calli. Microtubers were formed in the treatments of IAA+BAP and IAA+GA+BAP but not observed in the treatments of IAA alone or IAA+GA. IAA of higher concentrations (2.5-10 mg/cubic dm) was helpful to form sessile tubers. With the increasing of IAA levels, the fresh weight and diameter of microtubers increased progressively. At 10 mg/L IAA, the fresh weight and diameter of microtubers in the treatment of IAA+GA+BAP were 409.6 and 184.4 percent of that in the treatment of IAA+BAP respectively, indicating the interaction effect of GA and IAA in potato microtuberization
Afficher plus [+] Moins [-]Mots clés AGROVOC
Informations bibliographiques
Cette notice bibliographique a été fournie par Central Agricultural Library
Découvrez la collection de ce fournisseur de données dans AGRIS