Weed-ecological classification of the collected barnyardgrass [Echinochloa crus-galli(L.) Beauv.] in Korea
1988
Im, I.B. (Rural Development Administration, Iri (Korea R.). Honam Crop Experiment Station) | Guh, J.O. | Lee, J.Y. (Chonnam National Univ., Kwangju (Korea R.). Coll. of Agriculture) | Cho, Y.S. (Hannong Corporation, Seoul (Korea R.))
The seventeen barnyardgrass [Echinochloa crus-galli (L.) Beauv.] accessions, which were collected nation-wide in 1986 and selected two times through 1987, were experimented at 1988. To study the degree of ecological variations of the collected accessions of native barnyardgrass species as a weed, the experiment was conducted with Wagner pots in size of 1/5000a and under P.E. film house. Among 57 characters, 100 grains weight, rate of tiller increase from transplanting to 30 days, the number of the maximum tillers and rate of dry weight increase from 15 DAS to 22 DAS became intra-specific variations the coefficient of being higher than 30%, the size of the first leaf, fresh weight and dry 22 seedlings, rate of productive tiller, panicle number and tillering divergence made intra-specific variations more and less C.V. than 25%, while the required days up to heading since seeding at June 6, rate of fresh/dry weight and plant height of 22 days old seedling made intra-specific variations the coefficient being about 50%. Among the attributes the color in leaf, leaf sheath, mid-ribs, node, spike, grain, and plant type, length of leaf marginal tooth, grain shape, purple bend on leaf seemed useful to indentify the accessible variations
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