| Autor: |
Rumburg, C. B., Siemer, E. G. |
| Zdroj: |
Crop Science; March 1976, Vol. 16 Issue: 2 p172-174, 3p |
| Abstrakt: |
Herbage dry matter (HDM) accumulation from artificially vernalized (V) plants of ‘Garrison’ creeping foxtail (Alopecurus arundinaceaPoir.) was greater than nonvernalized (NV) plants during 46 days in a growth chamber at 27/4 C (day/night). Ratio of reproductive to total shoots was 0.075 with V and 0.004 with NV. Stems and sheaths contributed about 50 and 28% of final HDM of V and NV, respectively. Shoot number was similar between V and NV at the start, but new shoots of NV developed at nearly three times the rate of V. This difference, though, was offset by a slightly increased leaf weight and nearly doubled sheath and stem weight of V over NV. Leaves/shoot were 2.0 and 1.5 on day 6 for V and NV, respectively. The V treatment retained about 0.5 leaf per shoot advantage until day 46 when the values for both were about 3.4 leaves/shoot. Mean relative growth rates (RGR) derived from quadratic functions of HDM over time for V and NV were not significantly different. However RGR of V was slightly higher than NV during the period from 6 to 13 days while RGR values from 13 to 46 days were similar for both treatments. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
Plný text