Light intensity, gibberellin content and the resolution of shoot growth inBrassica
โ Scribed by Trevor I. Potter; Stewart B. Rood; Karen P. Zanewich
- Publisher
- Springer-Verlag
- Year
- 1999
- Tongue
- English
- Weight
- 260 KB
- Volume
- 207
- Category
- Article
- ISSN
- 0032-0935
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Light inhibits the rate of stem elongation of Phaseolus coccineus L. seedlings. Gibberellin A 4 (GA4), an endogenous component of Phaseolus seedlings (Bowen et al., Phytochem. 12, 2935Phytochem. 12, -2941Phytochem. 12, , 1973) ) promotes stem growth in the light but not in darkness. Dark-grown seedl
1. The effect of CCC applied at 10 -2 M to plants of Phaseolus was followed. 2. Dry seeds did not contain extractable gibberellin. During germination of control plants gibberellin content increased markedly between days 3 and 4; but then tended to decline. For plants which emerged into light condit
The stem growth in darkness or in continuous red light of two pea cultivars, Alaska (Le Le, tall) and Progress No. 9 (le le, dwarf), was measured for 13 d. The lengths of the first three internodes in dark-grown seedlings of the two cultivars were similar, substantiating previous literature reports