Effects of nitrogen nutritional stress on the morphological and yield parameters of tomato(Solanum lycopersicum L.)

作     者：Gideon O.Okunlola Olusanya A.Olatunji Akinjide M.Afolabi Kolade K.Gbadegesin 

作者机构：Department of Botany Obafemi Awolowo University Ile- Ife 

出 版 物：《Research in Cold and Arid Regions》 (寒旱区科学（英文版）)

年 卷 期：2015年第7卷第2期

页      面：137-145页

核心收录：

学科分类：09[农学] 0705[理学-地理学] 0902[农学-园艺学] 090202[农学-蔬菜学] 

主　　题：intracellular nitrogen stress Solanum lycopersicon stomata conductance transpiration 

摘      要：This investigation was carried out to better understand the effects of nitrogen stress on the growth and yield of tomato （Solanum lycopersicon L.）. Seeds of S. lycopersicon （Ife No. 1 variety） were collected from the Osun-State Ministry of Agriculture, Oshogbo, Nigeria and planted in analyzed top soil. The plants were grown for a period of five weeks within which they were supplied with water and kept under optimum environmental conditions that enhanced normal growth. After this period, the plants were subjected to different levels of nitrogen stress which include： plants supplied with dis- tilled water only （n）, plants supplied with complete nutrient solution （N）, plants supplied with nutrient solution in which nitrogen concentration sources was increased by a factor of 5 （N5）, and plants supplied with nutrient solution in which nitrogen concentration sources was increased by a factor of 10 （N10）. Analysis of Variance （ANOVA） results shows that there is no significant effect of stress on the growth and morphological parameters of tomato plants. However, there was a significant effect of nitrogen stress on the yield parameters. Nitrogen stress also caused an increase in the number and size of fruits produced in plants subjected with high nitrogen concentration.