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Details van artikel 51 van 62 gevonden artikelen
| Titel: |
Study of Cardinal Temperatures for Pumpkin (Cucurbita pepo) Seed Germination |
| Auteur: |
Saeid Zehtab-Salmasi |
| Verschenen in: |
Journal of agronomy |
| Paginering: | Jaargang 5 (2006) nr. 1 pagina's 95-97 |
| Jaar: |
2006 |
| Inhoud: |
The effect of a range of constant temperatures (10-35°C) on the germination of Cucurbita pepo var. styriaca seed was investigated to quantify the relationship between temperature and the rate of seed germination and to study the effect of conditioning temperature on the relationship. Seeds were conditioned on moist filter paper either at 25 or 20°C for 14 days in an incubator. No seeds of C. pepo conditioned at 25°C, germinated at <12.5°C or >35°C within 312 h. For seeds conditioned at 20°C, germination occurred at temperatures between 15 and 5°C within 312 h. The base (Tb, estimated from extrapolation), optimum (To) and ceiling (Tc) temperatures determined were: Tb = 17.6°C, To = 28°C and Tc>35°C for seeds conditioned at 20°C compared with Tb = 13.7°C, To = 25-27.5°C and Tc>35°C for seeds conditioned at 25°C. Positive linear relationships were established between the rates (reciprocal of time taken) of germination of 90% of the final germination percentage and temperature up to the respective optimal temperatures. The rate of germination for seed conditioned at 20°C was lower than for seed conditioned at 25°C. Similarly base and optimum temperatures were lower for seed conditioned at 25°C. |
| Uitgever: |
Asian Network for Scientific Information (provided by DOAJ) |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 51 van 62 gevonden artikelen
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