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Effects of Temperature on Growth and Color of Flower Stalk in Chinese Kale
Riyuan Chen,Xiahui Peng,Houcheng Liu,Guangwen Sun,Danfeng Huang 한국원예학회 2009 Horticulture, Environment, and Biotechnology Vol.50 No.6
The effects of temperature treatments [35/28 and 22/17 (℃, average temperature, day/night)] on growth and color of flower stalk were studied on Chinese kale (Brassica alboglabra Bailley) (cv. ‘Jianyexia’ and ‘Hongjiao’) in growth chamber. The results showed that the fresh weight of flower stalk and root, dry weight and leaf area of plant decreased under higher temperatures in both cultivars, and the reduction in cv. ‘Jianyexia’ was greater than in cv. ‘Hongjiao’. The anthocyanin concentrations in flower stalk decreased in both cultivars under higher temperature, and those in cv. ‘Hongjiao’ is significantly higher than in cv. ‘Jianyexia’. However, the flavonoid concentrations in flower stalk increased in both cultivars under higher temperature. There were little effects of temperature on concentrations of chlorophyll and carotenoid in flower stalk, and those of cv. ‘Jianyexia’ were significantly higher than cv. ‘Hongjiao’.
Shiwei Song,Hongxing Huang,Houcheng Liu,Guangwen Sun,Riyuan Chen 한국원예학회 2012 Horticulture, Environment, and Biotechnology Vol.53 No.5
Temperature has an important effect on plant growth and sex determination in flowers. The effect of different temperatures (high temperature: 30 /25 (day/night), medium temperature: 25 /18 and low temperature: 15 /10 )on flower sex determination and fruit yield was studied in Chieh-qua (Benincasa hispida Cogn. var. Chieh-qua How. ‘No. 4 Jiang xin’), also the content of absicsic acid (ABA) and indole acetic acid (IAA) in the shoot apex was measured. The results showed that medium and low temperatures during seedling stage boost the female flower differentiation after transplanting, compared with high temperature treatment, and the effect was more obvious when the temperature was lower. Lower temperature increased the content of ABA and IAA in shoot apex of Chieh-qua. There was a positive relationship between the ratio of IAA/ABA and plant female flower determination under different temperature treatments (R = 0.8744). Temperature may affect female flower differentiation of Chieh-qua by changing the contents of ABA and IAA in shoot apex. Fruit yield was not significantly affected by different temperature treatments.
Effect of supplemental blue light intensity on the growth and quality of Chinese kale
Yamin Li,Yinjian Zheng,Houcheng Liu,Yiting Zhang,Yanwei Hao,Shiwei Song,Bingfu Lei 한국원예학회 2019 Horticulture, Environment, and Biotechnology Vol.60 No.1
The infl uence of blue light on the growth and quality of vegetables is controversial, since both positive and negative eff ectshave been observed on diff erent varieties of vegetables and most research has been conducted with a combination of lightspectrums. In this work, we investigated the eff ects of supplemental blue light intensity on growth, nutritional quality, andhealth-promoting compounds of Chinese kale ( Brassica alboglabra Bailey) using only blue (460 nm) light-emitting diodes10 days before harvest in a greenhouse under ambient light conditions. Four blue-light treatments were conducted (0, 50,100, and 150 μmol m −2 s −1 , named T0, T50, T100, and T150, respectively) with 12 h (6:00–18:00) of light treatment perday. The growth of Chinese kale plants was improved by supplemental blue light. The fresh and dry weights of Chinesekale plants were signifi cantly higher under T50 and T100 than those in the other treatments. The content of chlorophyll band total chlorophyll increased signifi cantly under T50, and the content of carotenoids increased signifi cantly under T150. The contents of soluble sugars and free amino acids were signifi cantly increased under the blue light treatments. The nitratecontent decreased with increasing blue light intensity, while the anthocyanin content increased. The contents of vitamin Cin T50 and total phenolic compounds in T150 were signifi cantly higher than in T0. The fl avonoid contents were signifi canthigher in T50 and T150, and signifi cantly lower in T100. Our results show that blue light can infl uence the growth and qualityof Chinese kale and 50 μmol m −2 s −1 of supplemental blue light might be the most feasible light intensity for Chinesekale production.
Riyuan Chen,Shiwei Song,Xiuchun Li,Houcheng Liu,Danfeng Huang 한국원예학회 2013 Horticulture, Environment, and Biotechnology Vol.54 No.3
The effect of phosphorus (P) nutrition on plant growth and pigment formation in the flower stalk was studied under hydroponic conditions for 2 Chinese kale (Brassica alboglabra Bailey) cultivars: ‘Jianyexia’ (green flower stalk)and ‘Hongjiao’ (mauve flower stalk). Three different P treatments were used: 30 (normal-P), 7.5 (low-P), and 0 mg·L-1(P-deficient). The results showed that the biomass, yield, plant height, stem diameter, and leaf number of Chinese kale were significantly reduced in the low-P and P-deficient treatments compared to the normal-P treatment. The chlorophyll content in the flower stalk epidermis was not affected by different P levels in ‘Jianyexia’, but was significantly reduced by the P-deficient treatment in ‘Hongjiao’. Decreased P levels caused the flavonoid, soluble phenol, and anthocyanin content of the flower stalks to gradually increase in both Chinese kale cultivars. The pH value of the flower stalk epidermis gradually decreased with the declining P levels, and was significantly different among the 3treatments. As the P levels declined, phenylalanine ammonia-lyase (PAL) and chalcone isomerase (CHI) activities in the flower stalk epidermis gradually increased, and were significantly different among the 3 treatments. P nutrition may control the synthesis of anthocyanins in the flower stalk by regulating the epidermal pH value, and the activities of PAL and CHI.