Studies on Growth Characteristics and Osmotic Adjustment of Iris Lactea Pall. var ChinensisKoidz Grown in Salt-Alkali soil

Abstract

Abstract: A study was conducted to determine growth characteristics, capacity of osmotic adjustment of Iris Lactea Pall. var Chinensis Koidz grown in salt-alkali soil of Songnen plain in China. Iris grew more rapid on July and August, plant height is 50~90cm, and has 5~8 branches. The biomass per plant is 47.2g/plant during growth and development period. The process of Iris growth is divided three stages: slow growth stage, rapid growth stage and stop growth stage. Substances of osmotic adjustment were analyzed to determine the capacity of osmotic adjustment and adaptation in Iris leaves. Accumulation of Na+, K+, proline concentration and improvement of cell membrane penetration were conducted to adjusted very rapidly to salt and alkali content during each month. With the accumulation osmotic substances, water potentials and osmotic potentials in Iris leaves decreased, cell turgid pressure increased or maintained to preserve cell, leaf and then whole plant growth under salt and drought condition.

Huang Zhongwen, Sun Guangyu, Zhang Qinghong. Studies on Growth Characteristics and Osmotic Adjustment of Iris Lactea Pall. var ChinensisKoidz Grown in Salt-Alkali soil[J]. Chinese Agricultural Science Bulletin, 2005, 21(12): 199-199.

References

1 李秀军.松嫩平原西部土地盐碱化与农业可持续发展.地理科学,2000,20(1):51~55
2 James RA, Riveli AR, Munns R, et al. Factors affecting CO2 assimilation,leaf injury and growth in salt-stresed durum wheat. Funct Plant Biol, 2002, 29:1393~1403
3 Tester M, Davenport R. Na+ tolerance and Na+ transport in higher plants. Annal Bot, 2003, 91:503~527
4 Daniells IG, Holland JF, Young RR. Relationship between yield of grain sorghum (Sorghum bicolor) and soil salinity under field conditions. Aust J Exp Agric, 2001, 41:211~217
5 Dondini L. Bonazzi S. Del-Duca S. Acclimation of chloroplast transglutaminase to high NaCl concentration in a polyamine-deficient variant strain of Dunaliella salina and in its wild type. J Plant Physiol, 2001, 158:185~197
6 Luna C, de Luca M, Taleisnik E. Physiological causes for decreased productivity under high salinity in Boma, a tetraploid Chloris gayana cultivar. II. Oxidative stress. Aust J Agric Res, 2002, 53:663~669
7 Munns R. Comparative physiology of salt and water stress. Plant, Cell Environ, 2002, 25:239~250
8 聂绍荃.黑龙江植物资源志.东北林业大学出版社,2003.860~862
9 Bajji M, Lutts S, Kinet JM. Water deficit effect on solution contribution to osmotic adjustment as a function of leaf ageing in three durum wheat (Triticum durum Desf.) cultivars performing differently in arid conditions. Plant Sci, 2001, 160: 669~681
10 李月树.羊草种群地早部分生物量形成规律的探讨.植物生态学与地植物学丛刊,1983,7(4):289~297
11 Hasegawa PM, Bressan RA, Zhu JK, et al. Plant cellular and molecular responses to high salinity. Ann Rev Plant Physiol Plant Mol Biol, 2000, 51:463~499
12 Cramer GR, Bowman DC. Kinetics of maize leaf elongation: Increased yield threshold limits short~term, steady state elongation rates after exposure to salinity. J Exp Bot. 1991, 42:1417~1426
13 Neumann PM. Rapid and reversible modifications of extension capacity of cell walls in elongating maize leaf tissues responding to root addition and removal of NaCl. Plant, Cell and Environment, 1993, 16:1107~1114
14 Yeo AR, Lee KS, Izard P, et al. Short~ and long~term effects of salinity on leaf growth in rice (Oryza sativa L.). J Exp Bo, 1991, 42:881~889
15 Passioura JB, Munns R. Rapid environmental changes that affect leaf water status induce transient surges or pauses in leaf expansion rate. Aust J Plant Physio, 2000, 27,941~948
16 Shalhevet J, Hsiao TC. Salinity and drought:A comparison of their effects on osmotic adjustment, assimilation, transpiration and growth. Irr Sci, 1986,(7):249~264
17 Sanchez FJ, Manzanares M, de Andres EF, et al. Turgor maintenance, osmotic adjustment and soluble sugar and proline accumulation in 49 pea cultivars in response to water stress. Field Crop Res, 1998,59:225~235
18 Silva JM, Arrabara MC. Contributions of soluble carbohydrates to the osmotic adjustment in the C4 grass Setaria sphacelata: A comparison between rapidly and slowly imposed water stresses. J Plant Physiol, 2004,161:551~555