关键词: 忍冬, 种质资源, 叶绿素, 花青素, 光合速率

Abstract: Chlorophyll,anthocyanin content and photosynthetic characteristics were determined in leaves of different germplasm resources in honeysuckle resources garden by spectrophotometry and LI-6400XT photosynthetic instrument,and a comparative analysis was carried out among the chlorophyll,anthocyanin content and photosynthetic characteristics. The results showed that:the chlorophyll content of No.1 (3.70 mg/g),No.2 (3.65 mg/g),No.4 (3.04 mg/g),No.8 (3.07 mg/g) and No.17 (3.52 mg/g) were higher,the chlorophyll content of No.16 (1.49 mg/g)was the lowest. The anthocyanin content of No.8(1.113 mg/L)and No.9(1.360 mg/L)which belonged to Lonicera japonic Thunb.var.chinensis (Wats.)Bak. were higher,anthocyanin content of No.16 (0.496 mg/L) which belonges to Lonicera acuminata Wall. was between Lonicera japonica Thunb. and Lonicera japonic Thunb. var. chinensis (Wats.)Bak.,anthocyanin content of Lonicera japonica Thunb.(0.100~0.248 mg/L) was the lowest. The Photosynthetic rate of No.1 (6.63 μmol·m^-2·s^-1),No.2 (5.72 μmol·m^-2·s^-1),No.3 (5.41 μmol·m^-2·s^-1),No.8 (5.41 μmol·m^-2·s^-1) and No.10 (5.00 μmol·m^-2·s^-1) were higher. The photosynthetic rate was extremely and significantly correlated with chlorophyll content,anthocyanins had affect on the photosynthetic rate,photosynthetic rate was extremely significantly positive correlated with stomatal conductance and transpiration rate,but significantly negative correlated with the intercellular CO₂ concentration. Conclusion: The chlorophyll content and photosynthetic rate of No.1,No.2, and No.3 honeysuckle resources were higher,the anthocyanins content of No.1,No.2,and No.3 were moderate. The chlorophyll content and photosynthetic rate of No.8 were higher than that of No.9,while the anthocyanins content was lower. Honeysuckle germplasm resources of No.1,No.2,No.3 and No.8 with good quality were suitable for popularizing in the production.

Key words: honeysuckle, germplasm resources, chlorophyll, anthocyanin, photosynthetic rate