Full TGIF Record # 5316
Item 1 of 1
Help us please - we need a copy of this item. Click here or Email tgif@msu.edu if you can help! Thank you.
Author(s):Takahashi, H.; Takahashi, Y.; Honda, T.; Negishi, S.
Author Affiliation:Central Agricultural Experiment Station, Konosu, Saitama, Japan
Title:Studies on the successive cultivation of Italian ryegrass and barnyard grass on a paddy field converted to upland conditions. 3. The effect of some environmental conditions on the seed viability of barnyardgrass
Source:Journal of Japanese Society of Grassland Science. Vol. 20, No. 2, 1974, p. 73-78.
Keywords:TIC Keywords: Echinochloa crusgalli; Seed germination; Dormancy; Environmental effects
Abstract/Contents:Periodical changes of viability of barnyardgrass (Echinochloa crus-galli var. caudata) seed were investigated using air-dried seeds stored at 3 different temperatures and seeds kept in soil. Seeds maturing in autumn were dormant but there was no secondary dormancy. In air-dried seeds, the dormancy period ranged from 3 to 7 months for indoor storage (10-20 deg C in winter), from 6 to 11 months outdoors (-2.1 to 30.7 deg ) and from 1 to 2 years for low-temperature storage (5 deg ). About 50% of seeds kept in soil began to lose their dormancy within 1 month of shedding and germinated under alternating temperatures (30 deg /20 deg ); dormancy of all seeds had been broken by the following Feb.-Apr. Air-dried seeds stored inside or outdoors rapidly lost viability at high temperatures in the 2nd or 3rd summer after harvest; they survived for )4 years, however, when kept at low temperatures. 85-90% of seeds in the top 0.5 cm of the soil emerged naturally from late Apr. to Sept. of the following year and by the 2nd year 50% of seeds in the 0.5-3 cm layer had also emerged. Most seeds at a depth of )3 cm in the soil died within 3 years. Viability in the soil was promoted by humid or submerged conditions. F.en s. (See also preceding abs.).
Language:Japanese
References:8
Note:Summary appears in English
Geographic Terms:Japan
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Takahashi, H., Y. Takahashi, T. Honda, and S. Negishi. 1974. Studies on the successive cultivation of Italian ryegrass and barnyard grass on a paddy field converted to upland conditions. 3. The effect of some environmental conditions on the seed viability of barnyardgrass. (In Japanese) Journal of Japanese Society of Grassland Science. 20(2):p. 73-78.
Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=5316
If there are problems with this record, send us feedback about record 5316.
Choices for finding the above item:
Help us please - we need a copy of this item. Click here or Email tgif@msu.edu if you can help! Thank you.
Request through your local library's inter-library loan service (bring or send a copy of this TGIF record)