Factors Promote Germination and Initial Growth of Monochoria vaginalis

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Abstract:

The purpose of study was conducted to examine factors that influence on germination of Monochoria vaginalis, a major and problematic weed in paddy fields. It was found that seed coats of barnyardgrass and Monochoria itself strongly promoted germination of Monochoria seeds. Germinating rice seeds caused germination induction of Monochoria, but dehulled rice and rice hulls did not play a role. In general, rice root exudates from 2 to 22 day after germination did not exert significant influence on germination and initial growth of Monochoria. The increase of rice seeds showed no remarkable impact on germination, root length and shoot length of Monochoria. In conclusion, it is suggested that coats of weed seeds, residues of rice and other plants in paddy fields may play a critical role in promoting germination of Monochoria seeds. Therefore, the incorporation of these residues in paddy fields may provide negative impact to weed control as germination of Monochoria is much accelerated.

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[1] L.G. Holm et al., The World's Worst Weeds: Distribution and Biology, University Press of Hawaii, Honolulu, 1977.

Google Scholar

[2] M. Arai, R. Kawashima, Ecological studies on weed damage of rice plants in rice cultivation. (I.II) On the mechanism of competition between rice plants and weeds, Jpn. J. Crop Sci. 25 (1956) 115-119 (in Japanese with English abstract).

DOI: 10.1626/jcs.25.115

Google Scholar

[3] N. Kabaki, H. Nakamura, Differences in nutrient absorption among paddy weeds. I. Nitrogen absorption in mixed planting, Weed Res. Jpn. 29 (1984) 147-152 (in Japanese with English abstract).

DOI: 10.3719/weed.29.147

Google Scholar

[4] Y.S. Momonoki, Effect of ethylene and carbon dioxide on seed germination of Monochoria vaginalis var. plantaginea, Weed Res. Jpn. 37 (1992) 121-128.

DOI: 10.3719/weed.37.121

Google Scholar

[5] P.H. Chen, W.H.J. Kuo, Seasonal changes in the germination of buried seeds of Monochoria vaginalis, Weed Res. 39 (1999) 107-115.

DOI: 10.1046/j.1365-3180.1999.00128.x

Google Scholar

[6] H. Chisaka, T. Kataoka, Physiological seed dormancy of annual lowland weeds, Weed Res. Jpn. 22 (Suppl.) (1977) 94-96 (in Japanese with English abstract).

Google Scholar

[7] Y. Esashi, H. Katoh, Dormancy and impotency of cocklebur seeds. III. CO2- and C2H4-dependent growth of the embryonic axis and cotyledon segments, Plant Cell Physiol. 16 (1974) 707-718.

DOI: 10.1104/pp.59.2.117

Google Scholar

[8] S. Kawaguchi et al., Allelopathic potential of rice seed (Oryza sativa L.) on seed germination of Monochoria vaginalis var. plantaginea, J. Weed Sci. Tech. 42 (1997) 262-267.

DOI: 10.3719/weed.42.262

Google Scholar

[9] Y. Takeuchi, S. Kawaguchi, K. Yoneyama, Inhibitory and promotive allelopathy in rice (Oryza sativa L.), Weed Biol Manag. 1 (2001) 147-156.

DOI: 10.1046/j.1445-6664.2001.00031.x

Google Scholar

[10] T. Yokota et al., Mechanism of the rice hull-induced germination of Monochoria vaginalis seeds in darkness, Weed Biol. Manag. 14 (2014) 138-144.

DOI: 10.1111/wbm.12042

Google Scholar

[11] T.D. Xuan et al., Identification of phytotoxic substances from early growth of barnyardgrass (Echinochloa crus-galli) root exudates, J. Chem. Ecol. 32 (2006) 895-906.

DOI: 10.1007/s10886-006-9035-x

Google Scholar

[12] T. Yamamoto et al., Allelopathic substance exuded from a serious weed, germinating barnyard grass (Echinochloa crusgalli) root, J. Plant Growth Regul. 18 (1999) 65-67.

DOI: 10.1007/pl00007050

Google Scholar

[13] H.H. Li et al., Allelopathy of barnyardgrass (Echinochloa crusgalli L. Beauv var curs-galli), Weed Res. Jpn. 37 (1992) 146-152.

DOI: 10.3719/weed.37.146

Google Scholar

[14] T.D. Khanh, T.D. Xuan, I.M. Chung, Rice allelopathy and the possibility for weed management, Annal. Appl. Biol. 151 (2007) 325–339.

DOI: 10.1111/j.1744-7348.2007.00183.x

Google Scholar

[15] S. Kawaguchi et al., Effects of aqueous extract of rice plants (Oryza sativa L.) on germination and radicle elongation of Monochoria vaginalis var. plantaginea, Plant Growth Regul. 23 (1997) 183-189.

Google Scholar

[16] Y. Takeuchi et al., Stimulation of germination of Monochoria vaginalis seeds by seed coat puncture and cotylenins, Weed Res. Jpn. 40 (1995) 221-224.

DOI: 10.3719/weed.40.221

Google Scholar

[17] Y. Takeuchi et al., Effect of rice seed and plant growth substances on seed germination of Monochoria vaginalis seeds, Weed Res. Jpn. 37 (Suppl.) (1992) 174-175 (in Japanese).

Google Scholar

[18] T.D. Khanh et al., Allelochemicals of barnyardgrass-infested soil and their activities on crops and weeds, Weed Biol. Manag. 8 (2008) 267-275.

DOI: 10.1111/j.1445-6664.2008.00300.x

Google Scholar

[19] T.D. Xuan et al., Biological control of weeds and plant pathogens in paddy rice by exploiting plant allelopathy: an overview, Crop Prot. 24 (2005) 197-206.

DOI: 10.1016/j.cropro.2004.08.004

Google Scholar