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| Web URL(s): | http://www.jstor.org/stable/4042874
Last checked: 04/24/2014
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http://www.jstor.org/stable/pdfplus/4042874.pdf
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| Publication Type:
| Refereed |
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| Author(s): | McWhorter, C. G.;
Jordan, T. N. |
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| Author Affiliation: | McWhorter: Plant Physiol.; Jordan: Asst. Plant PhysioL, S. Weed Sci. Lab., Agr. Res. Serv., U.S. Dep. Agr. and the Mississippi Agr. and Forest. Exp. Sta., respectively, Stoneville, MS |
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| Title: | Comparative morphological development of six johnsongrass ecotypes |
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| Source: | Weed Science. Vol. 24, No. 3, May 1976, p. 270-275. |
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| Publishing Information: | Champaign, Illinois: Weed Science Society of America |
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| # of Pages: | 6 |
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| Related Web URL: | http://www.jstor.org/stable/info/4042874
Last checked: 04/24/2014
Notes: Abstract only |
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| Keywords: | TIC Keywords: Sorghum halepense; Dalapon; Stems; Herbicides; Ecotypes; Growth rate; Germination
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| Abstract/Contents: | "The comparative morphological development of six johnsongrass [Sorghum halepense (L.) Pers.] ecotypes was studied over a 10-week period. Three of the ecotypes were previously shown to be susceptible to dalapon (2,2,-dichloro-propionic acid) while others were resistant to the herbicide. The production of primary culms varied from 5.0 to 9.3 per plant system, and secondary culms ranged from 7 to 24 per plant system. Plant heights varied nearly two-fold, and the number of individual rhizomes produced by different ecotypes varied three-fold. Susceptible ecotypes from Georgia, Washington, and Illinois produced more rhizome nodes and higher dry and wet weights of culms and rhizomes than resistant ecotypes from Mississippi, Louisiana, and California. Ecotypes most resistant to dalapon had longer rhizomes internodes and higher water content in culms and rhizomes than susceptible strains. Differences in anatomy and growth support the hypothesis of the existence of johnsongrass ecotypes, but the results were not consistent with the susceptibility of ecotypes to dalapon." |
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| Language: | English |
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| References: | 23 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
McWhorter, C. G., and T. N. Jordan. 1976. Comparative morphological development of six johnsongrass ecotypes. Weed Sci. 24(3):p. 270-275. |
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| Web URL(s):
http://www.jstor.org/stable/4042874
Last checked: 04/24/2014
Access conditions: Item is within a limited-access website
http://www.jstor.org/stable/pdfplus/4042874.pdf
Last checked: 04/24/2014
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: b2203399a |
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