Study on Diurnal Variations of Photosynthetic Characteristics of  a New Spur and Stripe ‘Red Fuji’ Apple(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Study on Diurnal Variations of Photosynthetic Characteristics of  a New Spur and Stripe ‘Red Fuji’ Apple

Author(s):: Study on Diurnal Variations of Photosynthetic Characteristics of  a New Spur and Stripe ‘Red Fuji’ Apple; (College of Forestry and Horticulture，Xinjiang Agricultural University，Urumqi，Xinjiang 830052)

Keywords:: ‘Red Fuji’; bud mutation; photosynthetic characteristics; diurnal variations

Abstract:: n this experiment，‘Red Fuji’ bud mutation，‘Nagafu No.2’ and ‘Xinhong No.1’ were used as test materials.By using Li-6400 portable photosynthesis to determine the diurnal variations of three test apple materials.The results showed that the diurnal variation of net photosynthetic rates of the three apple materials were typical ‘double-apex curve’，and the phenomenon of ‘the midday rest’ were obvious.Compared with ‘Nagafu No.2’，‘Xinhong No.1’ and ‘bud sports’ of the net photosynthetic rate of daily average value were high 26.37% and 27.34% respectively.Their net photosynthetic rate in each period was greater than ‘Nagafu No.2’.Daily variation of transpiration rate were ‘single-valley curve’，‘Nagafu No.2’ and ‘Xinhong No.1’ peak appeared at 14:00 and ‘bud mutation’ peak appeared at 16:00.Those of the water use efficiency (WUE) presented ‘single-valley curve’，‘Xinhong No.1’ and ‘bud sports’ of WUE of overall level was longer than ‘Nagafu No.2’，showing that the spur type varieties drought-resistant ability stronger than the long branch type varieties.Compared with the long branch type varieties，spur type varieties had the potential to produce high photosynthetic capacity，and was more conducive to the accumulation of photosynthetic products，which provided theoretical basis for breeding of spur and red stripe type apple.

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Last Update: 2016-05-03