Skip to main content Accessibility help
×
Home

Fluctuating Temperatures Break Seed Dormancy of Catclaw Mimosa (Mimosa pigra)

  • Stephen P. Dillon (a1) and Frank Forcella (a1)

Abstract

Because environmental factors facilitating the breaking of dormancy of seed of catclaw mimosa (Mimosa pigra L. ♯ MIMPI) under field conditions were unknown, the effect of constant temperatures (2 to 44 C) on germination of scarified and unscarified seeds, and the effect of diurnally fluctuating temperatures on unscarified seeds were examined. Temperatures fluctuated diurnally by 10 and 20 C in these latter experiments. Germination was less than 10% at all constant temperatures except 44 C, which had 40% germination. Scarification increased germination to 100% at constant temperatures greater than 12 C. Germination of unscarified seed was significantly lower (0 to 23%) when day/night temperature ranges fluctuated by 10 C than when they fluctuated by 20 C. Optimum temperature for germination was 40/20 C, where 93% germination occurred within 4 days.

Copyright

References

Hide All
1. Maguire, J. D. 1962. Speed of seed germination – aid in selection and evaluation for seedling emergence and vigor. Crop Sci. 2:176177.
2. Swarbrick, J. T. 1983. The introduction of Mimosa pigra into northern Australia. Aust. Weeds 2:124.
3. Wanichanantkul, P. and Chinawong, S. 1979. Some aspects of the biology of Mimosa pigra in northern Thailand. Proc. Asian-Pacific Weed Sci. Soc. Conf. 7:2630.

Keywords

Fluctuating Temperatures Break Seed Dormancy of Catclaw Mimosa (Mimosa pigra)

  • Stephen P. Dillon (a1) and Frank Forcella (a1)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed