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Journal of Arid Land  2017, Vol. 9 Issue (3): 408-418    DOI: 10.1007/s40333-017-0093-4
Orginal Article     
aloxylon ammodendron (Amaranthaceae) fruit development delay caused by post-flowering non-inductive photoperiod
Cai REN1, Tian YU2, Guanghang QU1, Shuang WANG1, Ze WANG3, MIJITI Abudoukeyumu3, Hua ZHANG3, Lin MA3, Xiaoling HE1, Hao MA1,3,*()
1 State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
2 Urumqi County Agricultural Technology Extension Center, Urumqi 830011, China
3 Desert Research Institute in the Arid Region, Xinjiang Agricultural University, Urumqi 830052, China
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Haloxylon ammodendron (C. A. Mey.) is one of the economically and ecologically important desert trees used for sand fixation. The ovary of H. ammodendron is found not to swell after flowering in spring until at the end of August or early September in western China. However, what happens for ovary at anatomic level in that period and which crucial ecological factor regulates the phenomenon of H. ammodendron have not been fully understood. To characterize the phenomenon and explore the crucial environmental regulating factors, we carried out the morphological and anatomic observations at the different development stages of the fruits and three single-factor experiments (low air temperature, sufficient soil moisture, and short day length). Our results showed that under the natural conditions, the ovary of H. ammodendron after flowering developed slowly and the morphological changes of fruits were not significant for the period from May to August and after late August or early September; and then the ovary developed rapidly and matured in October. Cell division in embryo was observed to start approximately 25 days after flowering (DAF) and just developed to globular embryo stage at mid-August. Photoperiod was identified as the pivotal environmental factor regulating the fruit development of H. ammodendron. Moreover, the threshold value of day length for the fruit development was 14.0 h. A long day (>14.0 h) treatment began from 5 DAF could delay fruit development of H. ammodendron while a short day (<14.0 h) treatment could accelerate it. Moreover, a further longer day treatment (>15.0 h) could also delay fruit development even when they had developed for a long time (110 DAF). The present study indicated that H. ammodendron adopted a reproductive strategy of delayed fruit development and this strategy helps it survive and obtain offspring in harsh desert habitats.

Key wordsenvironmental factor      fruit development      Haloxylon ammodendron      photoperiod      reproductive strategy     
Received: 24 July 2016      Published: 10 May 2017
Corresponding Authors: Hao MA     E-mail:
Cite this article:

Cai REN, Tian YU, Guanghang QU, Shuang WANG, Ze WANG, MIJITI Abudoukeyumu, Hua ZHANG, Lin MA, Xiaoling HE, Hao MA. aloxylon ammodendron (Amaranthaceae) fruit development delay caused by post-flowering non-inductive photoperiod. Journal of Arid Land, 2017, 9(3): 408-418.

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