Effect of growth regulators on yield and fiber quality in ramie ( Boemheria nivea (L.) Gaud.), China grass

• Published in: Field crops research Vol. 69; no. 1; pp. 41 - 46
• Main Authors: Liu, Feihu, Liang, Xueni, Zhang, Naigen, Huang, Yousheng, Zhang, Shouwen
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 2001
• Subjects: Boehmeria nivea (L.) Gaud; Fiber fineness; Fiber yield; Microstructure of fiber; Plant growth regulators; Ramie; Boehmeria nivea (L.) Gaud; Microstructure of fiber; Fiber fineness; Ramie; Fiber yield; Plant growth regulators
• ISSN: 0378-4290; 1872-6852
• DOI: 10.1016/S0378-4290(00)00132-5

The effects of two mixtures of four plant growth regulators (choline chloride, gibberellin (GA 3), benzyladenine (6-BA) and NaHSO 3) at 20:9:5:800 mg kg −1 (H1) and 20:42:43:2350 mg kg −1 (H3) (active ingredients), respectively, were investigated on yield and fiber quality in ramie ( Boehmeria nivea (L.) Gaud.). The mixtures were sprayed over the canopy at two growth stages (10 and 20 days after the previous cut) of field-grown ramie. The treatments increased raw fiber yield by 13–18%, and improved fiber fineness by 57–349 m g −1, increased number of leaves per plant, and also improved all yield components. Treatment H1 resulted in a denser distribution, smaller diameters and greater quantity of fiber cells in stem cross-section. Physiological responses included improving leaf water status, increasing net photosynthetic rate, and decreasing electrolyte exosmosis rate.