[Objective] The aim of this study was to explore the daily change of photosyntheticratefor Prunus domestica ×armeniacain different growing seasons. The study can provide theoretical basis for arid area high yield...[Objective] The aim of this study was to explore the daily change of photosyntheticratefor Prunus domestica ×armeniacain different growing seasons. The study can provide theoretical basis for arid area high yield and quality cultivation.[Method] The photosynthetic physiological properties of leaves of different types of Prunus domestica × armeniaca were measured by the Li-6400 portable photosynthesis system indifferent seasons. By this method could analysis of photosyntheticcharacteristicsfor different types of Prunus domestica×armeniaca in different seasons.[Result] Daily change of photosyntheticrate(Pn) for Prunus domestica×armeniaca in differentseasons showed a "double-peak" curve. The peak values were at 10:00 and16:00. The Pn of ‘Fengweihuanghou', ‘Konglongdan', ‘Weihou', ‘Weiwang' and‘Weidi' reached the maximum in July, theywere 13.75, 14.76, 12.96, 13.3, and 11.9μmol/(m^2·s), respectively. The Pn of Prunus domestica×armeniaca reached minimumin August, they were 9.78, 10.71, 12.02, 10.43 μmol/(m^2·s). The Pn overall average of ‘Konglongdan' was highest,it reached 12.65 μmol/(m^2·s).The Pn overall average of ‘Weiwang' was lowest, it reached 11.31μmol/(m^2·s). There were extremely significant positive correlation between the Pn and Gs(P0.01). [Conclusion] Daily change of photosyntheticrate for Prunus domestica ×armeniaca in differentseasons showed a "double-peak" curve, showing significant phenomenon of "midday depression".The photosynthesis intensity of Prunus domestica ×armeniaca was strongest in July, and the photosynthesis intensity was weakest in August. ‘Konglongdan'showed the strongest photosynthesis capacity, ‘Weihou' and ‘Weiwang', followed.There were highest correlation between the Pn and stoma conductance(Gs).展开更多
[Objective] This study aimed to investigate the photosynthetic characteristics of different Prunus domestica × armeniaca cultivars, thereby providing some theoretical basis for high-yield and high-quality cultiva...[Objective] This study aimed to investigate the photosynthetic characteristics of different Prunus domestica × armeniaca cultivars, thereby providing some theoretical basis for high-yield and high-quality cultivation of P. domestica × armeniaca. [Method] Total three cultivars(Konglongdan, Fengwei Huanghou and Weiwang)of P. domestica × armeniaca were selected as the test materials, and their leafphotosynthetic parameters were measured with Li-6400 portable photosynthesis system.The light response curve and CO_2 response curve were drawn. [Result] There were significant differences in photosynthetic rate among the three cultivars of P. domestica × armeniaca(P〈0.01). The photosynthetic rate of Konglongdan [14.76 μmol/(m^2·s)]was highest. When the light intensity reached 1 800 μmol/(m^2·s), the maximum net photosynthetic rate of Konglongdan was up to 27.27 μmol/(m^2·s), and its apparent quantum yield reached the peak. Konglongdan showed lower light compensation point [43.069 μmol/(m^2·s)] and higher light saturation point [697.684 μmol/(m^2·s)].Weiwang showed the lowest CO2 compensation point(68.264 μmol/mol) and the highest carboxylic efficiency [0.072 μmol/(m^2·s)]. [Conclusion] Konglongdan showed the highest light utilization efficiency and photosynthetic potential, and it had the strongest utilization ability for weak light. The utilization ability of Weiwang for lowconcentration CO2 was strongest, followed by those of Fengwei Huanghou and Konglongdan.展开更多
A 现在城里人的日子是快节奏的。像那山洪暴发的流水,一浪追着一浪赶。赶不上就得被淘汰,被下岗。娟子的日子是怎样过的,只觉得漫长,像无尽的藤条,绕了山转,一跟头缠一跟头,无处下脚,无处动手,巴掌大的地方也是不能停留的。又一段漫长...A 现在城里人的日子是快节奏的。像那山洪暴发的流水,一浪追着一浪赶。赶不上就得被淘汰,被下岗。娟子的日子是怎样过的,只觉得漫长,像无尽的藤条,绕了山转,一跟头缠一跟头,无处下脚,无处动手,巴掌大的地方也是不能停留的。又一段漫长的时间过去了,娟子还没个正经职业,在这小城里车轱辘一样滚来荡去。展开更多
基金Supported by High-quality and High-efficient Cultivation Technology Demonstration and Promotion of Apricot and Plum(ZYLYKJTG2015020)~~
文摘[Objective] The aim of this study was to explore the daily change of photosyntheticratefor Prunus domestica ×armeniacain different growing seasons. The study can provide theoretical basis for arid area high yield and quality cultivation.[Method] The photosynthetic physiological properties of leaves of different types of Prunus domestica × armeniaca were measured by the Li-6400 portable photosynthesis system indifferent seasons. By this method could analysis of photosyntheticcharacteristicsfor different types of Prunus domestica×armeniaca in different seasons.[Result] Daily change of photosyntheticrate(Pn) for Prunus domestica×armeniaca in differentseasons showed a "double-peak" curve. The peak values were at 10:00 and16:00. The Pn of ‘Fengweihuanghou', ‘Konglongdan', ‘Weihou', ‘Weiwang' and‘Weidi' reached the maximum in July, theywere 13.75, 14.76, 12.96, 13.3, and 11.9μmol/(m^2·s), respectively. The Pn of Prunus domestica×armeniaca reached minimumin August, they were 9.78, 10.71, 12.02, 10.43 μmol/(m^2·s). The Pn overall average of ‘Konglongdan' was highest,it reached 12.65 μmol/(m^2·s).The Pn overall average of ‘Weiwang' was lowest, it reached 11.31μmol/(m^2·s). There were extremely significant positive correlation between the Pn and Gs(P0.01). [Conclusion] Daily change of photosyntheticrate for Prunus domestica ×armeniaca in differentseasons showed a "double-peak" curve, showing significant phenomenon of "midday depression".The photosynthesis intensity of Prunus domestica ×armeniaca was strongest in July, and the photosynthesis intensity was weakest in August. ‘Konglongdan'showed the strongest photosynthesis capacity, ‘Weihou' and ‘Weiwang', followed.There were highest correlation between the Pn and stoma conductance(Gs).
基金Supported by Demonstration and Extension Project for High-quality and High-efficiency Cultivation Techniques of Prunus domestica×armeniaca(ZYLYKJTG2015020)~~
文摘[Objective] This study aimed to investigate the photosynthetic characteristics of different Prunus domestica × armeniaca cultivars, thereby providing some theoretical basis for high-yield and high-quality cultivation of P. domestica × armeniaca. [Method] Total three cultivars(Konglongdan, Fengwei Huanghou and Weiwang)of P. domestica × armeniaca were selected as the test materials, and their leafphotosynthetic parameters were measured with Li-6400 portable photosynthesis system.The light response curve and CO_2 response curve were drawn. [Result] There were significant differences in photosynthetic rate among the three cultivars of P. domestica × armeniaca(P〈0.01). The photosynthetic rate of Konglongdan [14.76 μmol/(m^2·s)]was highest. When the light intensity reached 1 800 μmol/(m^2·s), the maximum net photosynthetic rate of Konglongdan was up to 27.27 μmol/(m^2·s), and its apparent quantum yield reached the peak. Konglongdan showed lower light compensation point [43.069 μmol/(m^2·s)] and higher light saturation point [697.684 μmol/(m^2·s)].Weiwang showed the lowest CO2 compensation point(68.264 μmol/mol) and the highest carboxylic efficiency [0.072 μmol/(m^2·s)]. [Conclusion] Konglongdan showed the highest light utilization efficiency and photosynthetic potential, and it had the strongest utilization ability for weak light. The utilization ability of Weiwang for lowconcentration CO2 was strongest, followed by those of Fengwei Huanghou and Konglongdan.