Effects of sodium chloride on seed germination and growth of two Chinese desert shrubs, Haloxylon ammodendron and H. persicum
(Chenopodiaceae)

Tobe, Kazuo; Li, Xiaoming; Omasa, Kenji

doi:10.1071/bt99013

Cited by 98 publications

(81 citation statements)

References 24 publications

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“…In different regions, due to different environmental conditions, seed traits display genetic variation in adapting to the environment (Rehfeldt 1993); thus, seeds of different provenances display different morphological and physiological characteristics of (Johnsen and Seiler 1996). Recent research on H. ammodendron has mainly focused on its ecological functions, droughttolerance mechanisms, physiological characteristics and biochemical characteristics (Huang et al 2003;Jiang et al 2004;Li et al 2007;Song et al 2005Song et al , 2006Su et al 2004Su et al , 2007Sun et al 2002;Tobe et al 2000Tobe et al , 2005Ungar 1991;Wang et al 2005;Wei et al 2007;Xu et al 2006). Studies of H. ammodendron provenances in China have been rare.…”

Section: Introductionmentioning

confidence: 94%

Genetic variation in seed and seedling traits of six Haloxylon ammodendron shrub provenances in desert areas of China

et al. 2010

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China is one of the countries most severely affected by desertification. Haloxylon ammodendron is an ecologically important component of the desert ecosystem and is one of the main shrub species used for ecological restoration. We compared the genetic variation in seed and seedling traits among six H. ammodendron provenances arrayed from east to west in China. The experiment was carried out in a greenhouse in well-prepared seedling beds (lines 1.5 m apart and seeds with in lines 1.0 m apart, 2.0 cm deep) with five lines (seven seeds per line) per provenance in a randomized block design with six replicates. The seed traits of fruit wing length, kernel weight, germination rate, and survival rate were compared, as were the seedling traits of internode length, branch number, assimilation shoot diameter, height, collar diameter, new shoot length, main root number, main root length, aboveground fresh weight, and underground fresh weight. Moreover, correlations between each seed and seedling trait and climate and geographical factors were assessed. The results show that the seeds from Dengkou County, Inner Mongolia had the best performance. Germination rate and survival rate were significantly positively correlated with longitude; and fruit wing length, kernel weight, seedling height, and new shoot length were significantly negatively correlated with latitude. Fruit wing length was significantly correlated with altitude. Among the climatic factors, the temperature in January had a strong direct effect on fruit wing length, germination rate, seedling height, and new shoot length. The mean annual rainfall had a strong direct effect on collar diameter. Humidity had a strong direct effect on survival rate. Seedling height, aboveground weight, and collar diameter could be important criteria for early provenance selection in the seedling stage. This study provides a reference for the selection of high-quality H. ammodendron seeds for drylands of northwest China.

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Section: Introductionmentioning

confidence: 94%

Genetic variation in seed and seedling traits of six Haloxylon ammodendron shrub provenances in desert areas of China

et al. 2010

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“…In related genera, lower temperatures promote seed germination in Haloxylon recurvum, while high temperatures delay seed germination significantly at various NaCl treatments (Khan and Ungar, 1996). Seed germination of Haloxylon ammodendron is relatively high at 10-20°C, while it decreases severely when temperatures are over 20°C (Huang et al, 2003;Tobe et al, 2000), indicating that seeds of these Haloxylon species may germinate in early spring, rather than in late spring or summer. Halostachys caspica, H. strobilaceum and K. foliatum are dominant halophytic species with high salt resistance which occur occasionally in association with H. ammodendron in saline soils in Xinjiang, China.…”

Section: Introductionmentioning

confidence: 94%

Salinity and Temperature Effects on Germination for Three Salt-resistant Euhalophytes, Halostachys caspica, Kalidium foliatum and Halocnemum strobilaceum

2006

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The effects of three salinities (0, 100 and 500 mM NaCl) and four constant temperatures (10, 20, 30 and 35°C) on seed germination of Halostachys caspica (M. B.) C. A. Mey., Kalidium foliatum (Pall.) Mop. and Halocnemum strobilaceum (Pall.) Bieb. were investigated. After seeds were treated with different concentrations of NaCl at constant temperatures of 10-35°C for 16 days, ungerminated seeds were transferred to distilled water for 10 days to investigate the total germination; after this time, the ungerminated seeds from the 10 and 20°C treatments were then moved to 35°C for another 5 days to determine the final germination. The three plant species in the present experiment are salt-resistant euhalophytes growing in high saline soils in the Zhungur Basin in Xinjiang, a northwest province of China.Compared with germination under control conditions, germination percentages of all three species were not affected by 100 mM NaCl at 10-35°C, while severely inhibited by 500 mM NaCl; germination percentages were very low at 10°C up to 100 mM NaCl for all species; the optimum temperature for germination of H. caspica and K. foliatum was 20-30°C, while 35°C for H. strobilaceum, up to 100 mM NaCl; seeds did not suffer ion toxicity for all species, as evidenced by the high total germination after ungerminated seeds pretreated with 500 mM NaCl were transferred to distilled water at constant temperatures of 10-35°C for 10 days, and the high final germination after the ungerminated seeds from the 10 and 20°C treatments were subsequently moved to 35°C for another 5 days; Halostachys caspica had greater sensitivity to increasing temperatures from 10 and 20°C to 35°C compared with the other two species.

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“…In the case of H. ammodendron, low soil salinity in the dune may hamper seedling survival. A study conducted by [32] a hydroponic culture of H. ammodendron at approximately three months was subjected to NaCl solution of 0, 200, 400 and 600 mmol/kg. The study found that the survival was highest at 400 mmol/kg of NaCl.…”

Section: Discussionmentioning

confidence: 99%

“…A study conducted by [32] carried out an experiment to measure the percentage of germination and concluded that the ideal seed germination temperature was around 20°C and that temperature increases lessen the percentage of germination. In this experiment, however, maximum germination was recorded at 25°C.…”

Section: Literature Reviewmentioning

confidence: 99%

Ecological and Botanical Diversity in <i>Haloxylon Persicum</i> Community at Al-Qassim Region in Kingdom of Saudi Arabia

Alghanem

2018

ENV

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Haloxylon persicum is a vital species in desert environment. Not only does it play a role in stabilizing sand dunes, but also conserves soil and water and reduces the rate of desertification. However, the fact that the plant species is endangered poses serious consequences. Haloxylon persicum is native to northwestern China, Russia and the Middle East and can withstand extreme drought. This study was conducted in the Al-Qassim region of Saudi Arabia and the research areas were selected based on how they represent the ecological and botanical diversity of the H. persicum species. The researcher chose nine sites from the three areas. The researcher estimated the vegetation parameters like the species coverage, density and frequency. Moreover, soil analysis was also conducted in all the three selected areas of research. Physical tests to ascertain the soil types were conducted to find the electrical conductivity (EC) Mmoh / cm, pH, total dissolved salts (TDS) as parts per million (ppm), Sodium Ions, Potassium, and soil texture. The results show that soil factors play an important role in the survival and distribution of H. persicum species starting with the emergence as well as establishment of the seedlings. The researcher concludes that to protect the H. persicum community, it is important to stop overgrazing the plants and using it as the main source of wood for charcoal. It is critical that the Kingdom of Saudi Arabia and other nations in which H. persicum exists protect the species because of the role it plays to the desert topography.

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Effects of sodium chloride on seed germination and growth of two Chinese desert shrubs, Haloxylon ammodendron and H. persicum (Chenopodiaceae)

Cited by 98 publications

References 24 publications

Genetic variation in seed and seedling traits of six Haloxylon ammodendron shrub provenances in desert areas of China

Genetic variation in seed and seedling traits of six Haloxylon ammodendron shrub provenances in desert areas of China

Salinity and Temperature Effects on Germination for Three Salt-resistant Euhalophytes, Halostachys caspica, Kalidium foliatum and Halocnemum strobilaceum

Ecological and Botanical Diversity in <i>Haloxylon Persicum</i> Community at Al-Qassim Region in Kingdom of Saudi Arabia

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