TY - JOUR
T1 - Ipomoea batatas (sweet potato), a promising replacement control crop for the invasive alien plant Ageratina adenophora (asteraceae) in China
AU - Shen, Shicai
AU - Xu, Gaofeng
AU - Li, Diyu
AU - Jin, Guimei
AU - Liu, Shufang
AU - Clements, David Roy
AU - Yang, Yanxian
AU - Rao, Jia
AU - Chen, Aidong
AU - Zhang, Fudou
AU - Zhu, Xiaocheng
PY - 2019/9
Y1 - 2019/9
N2 -
Ipomoea batatas (L.) Lam has been recognized as a very
competitive crop against certain farming weeds, but more information is
required to support
its potential field application. The current study utilized a
de Wit replacement series incorporating five ratios of I. batatas and
Ageratina adenophora (Spreng.) R. M. King and H. Rob plants in 9 m2 plots in 2018. In monoculture, the main stem length, leafstalk length,
leaf area, and biomass of I. batatas were significantly higher than those of A. adenophora. In mixed culture, the plant height, branch, leaf,
and biomass of A. adenophora were significantly suppressed (P < 0.05) by I. batatas. The relative yield (RY) of I. batatas was significantly
higher than 1.0, and the RY of A. adenophora was significantly less than 1.0 (P < 0.05) in mixed culture, indicating that the intraspecific competition
was higher than interspecific competition for I. batatas, but the intraspecific competition was less than interspecific competition for A. adenophora.
The competitive balance index of I. batatas demonstrated a higher competitive ability than A. adenophora. The net photosynthetic rate (Pn) of
I. batatas and A. adenophora increased gradually from July to September, and then decreased from September to November in all treatments.
The Pn of I. batatas was higher than that of A. adenophora in July and August, less than that of A. adenophora from September to November
in monoculture, and the Pn of A. adenophora was significantly suppressed (P < 0.05) with increasing proportions of I. batatas in mixed culture
after August. The activities of antioxidant enzymes superoxide dismutase, peroxidase and catalase for A. adenophora were significantly reduced (P < 0.05)
with increasing proportions of I. batatas in mixed culture. Our results showed that plant growth of A. adenophora was significantly suppressed by
I. batatas competition due to certain morphological and physiological advantages of I. batatas. Therefore, I. batatas is a promising
replacement control candidate for managing the infestations of A. adenophora, reducing the soil seed bank and seedlings of A. adenophora.
AB -
Ipomoea batatas (L.) Lam has been recognized as a very
competitive crop against certain farming weeds, but more information is
required to support
its potential field application. The current study utilized a
de Wit replacement series incorporating five ratios of I. batatas and
Ageratina adenophora (Spreng.) R. M. King and H. Rob plants in 9 m2 plots in 2018. In monoculture, the main stem length, leafstalk length,
leaf area, and biomass of I. batatas were significantly higher than those of A. adenophora. In mixed culture, the plant height, branch, leaf,
and biomass of A. adenophora were significantly suppressed (P < 0.05) by I. batatas. The relative yield (RY) of I. batatas was significantly
higher than 1.0, and the RY of A. adenophora was significantly less than 1.0 (P < 0.05) in mixed culture, indicating that the intraspecific competition
was higher than interspecific competition for I. batatas, but the intraspecific competition was less than interspecific competition for A. adenophora.
The competitive balance index of I. batatas demonstrated a higher competitive ability than A. adenophora. The net photosynthetic rate (Pn) of
I. batatas and A. adenophora increased gradually from July to September, and then decreased from September to November in all treatments.
The Pn of I. batatas was higher than that of A. adenophora in July and August, less than that of A. adenophora from September to November
in monoculture, and the Pn of A. adenophora was significantly suppressed (P < 0.05) with increasing proportions of I. batatas in mixed culture
after August. The activities of antioxidant enzymes superoxide dismutase, peroxidase and catalase for A. adenophora were significantly reduced (P < 0.05)
with increasing proportions of I. batatas in mixed culture. Our results showed that plant growth of A. adenophora was significantly suppressed by
I. batatas competition due to certain morphological and physiological advantages of I. batatas. Therefore, I. batatas is a promising
replacement control candidate for managing the infestations of A. adenophora, reducing the soil seed bank and seedlings of A. adenophora.
KW - Antioxidant enzymes
KW - Integrated management
KW - Morphological suppression
KW - Photosynthesis
KW - Weed-crop competition
UR - http://www.scopus.com/inward/record.url?scp=85073609712&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85073609712&partnerID=8YFLogxK
U2 - 10.3391/mbi.2019.10.3.10
DO - 10.3391/mbi.2019.10.3.10
M3 - Article
AN - SCOPUS:85073609712
SN - 1989-8649
VL - 10
SP - 559
EP - 572
JO - Management of Biological Invasions
JF - Management of Biological Invasions
IS - 3
ER -
