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Reproductive Biology and Herbicidal Sensitivity of Maypop Passionflower (Passiflora incarnata)

Published online by Cambridge University Press:  12 June 2017

Glenn Wehtje ,
Russell B. Reed  and
Roland R. Dute
Glenn Wehtje
Affiliation:
Dep. Agron., and Soils, Alabama Agric. Exp. Stn., Auburn Univ., AL 36849
Russell B. Reed
Affiliation:
Research Data Analysis, Alabama Agric. Exp. Stn., Auburn Univ., AL 36849
Roland R. Dute
Affiliation:
Dep. Bot., Plant Path., and Microbiol., Alabama Agric. Exp. Stn., Auburn Univ., AL 36849
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Abstract

Studies were conducted to evaluate seed and root reproduction and herbicide sensitivity of maypop passionflower (Passiflora incarnata L. ♯ PAQIN). Water-leached seeds that were not exposed to light had the greatest germination (53%). Depending on soil type, seedlings emerged from depths of 10 to 12 cm. Most rapid germination and seedling development occurred between 30 and 35 C. Plants rapidly produced an extensive system of lateral roots and rhizomes that had regenerative capability at maturity. Root or rhizome sections of only 0.5 cm in length had a 20% regeneration rate. Desiccation effectively reduced viability of root and rhizome pieces. Effective herbicide control was limited to the triethylamine salt of triclopyr {[(3,5,6-trichloro-2-pyridinyl)oxy] acetic acid} at 2.2 ai kg/ha, alkanolamine salt of 2,4-D [(2,4-dichlorophenoxy)acetic acid] at 1.7 kg/ha, and dicamba (3,6-dichloro-o-anisic acid) at 0.3 to 0.6 kg/ha.

Keywords

Glyphosate2,4-D2,4-DBtriclopyrseed viabilityregeneration from rootsPAQIN
Type
Weed Biology and Ecology
Information
Weed Science , Volume 33 , Issue 4 , July 1985 , pp. 484 - 490
Copyright
Copyright © 1985 by the Weed Science Society of America 

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