Effects of Mycorrhizae on Sorghum Growth, Photosynthesis, and Stomatal Conductance under Drought Conditions

被引:23
作者
Ibrahim, M. A. [3 ]
Campbell, W. F. [1 ]
Rupp, L. A. [1 ]
Allen, E. B. [2 ]
机构
[1] Utah State Univ, Dept Plants Soils & Biometeorol, Logan, UT 84322 USA
[2] San Diego State Univ, Syst Ecol Res Grp, San Diego, CA 92118 USA
[3] Somali Natl Univ, Fac Agr, Mogadishu, Somalia
来源
ARID SOIL RESEARCH AND REHABILITATION | 1990年 / 4卷 / 02期
关键词
line-source sprinkler; irrigation; VAM fungus;
D O I
10.1080/15324989009381237
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
In this study, we determined whether inoculating sorghum ( Sorghum bicolor ( L.) Moench cv NK-367) seedlings with a vesicular arbuscular mycorrhizal (VAM) fungus (Glomus intraradices Schenck and Smith) would enhance plant yield under drought conditions. Seven-day-old seedlings were inoculated with the fungus and irrigated to field capacity for an additional 7 days. Daily irrigation treatments of I-1 (dry, -0.56 to -1.4 MPa), I-2 (moderately dry, -0.15 to -0.48 MPa), and I-3 (wet, -0.03 to -0.06 MPa) were then imposed with a line-source sprinkler. Under moderately dry soil conditions, growth, photosynthetic rate, and stomatal conductance of G. intraradices-colonized sorghum plants were significantly greater than in uncolonized plants. Results indicate that the VAM fungus enhanced yield of sorghum plants under drought conditions.
引用
收藏
页码:99 / 107
页数:9
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