Abstract
The contents of indole-3-acetic acid (IAA), gibberellins (GAs), abscisic acid (ABA), and cytokinins were determined in ovules of normal cotton (Tm-1) and a kind of fiber differentiation mutant (Xin) before and after flowering by enzyme-linked immunosorbent assays. It was found that 24 h before flowering, a peak of IAA content was observed in ovules of Tm-1, whereas in ovules of Xin, a low level of IAA was determined. From -1 day (1 day before flowering) to +3 days (3 days after flowering), GA1+3 levels in ovules of Xin were 40-70% lower than those of Tm-1; GA4+7 levels were very low, and there was no visible difference in GA4+7 content between normal and mutant cotton. The ABA content in ovule of Tm-1 decreased by 70% 3 days after flowering, whereas that of Xin only decreased by 20%. The levels of cytokinins in ovules of Tm-1 decreased after flowering, and those of Xin kept up a steady increase.
Original language | English |
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Pages (from-to) | 173-177 |
Number of pages | 5 |
Journal | Journal of Plant Growth Regulation |
Volume | 15 |
Issue number | 4 |
DOIs | |
State | Published - 1996 |
Externally published | Yes |
Keywords
- Cotton ovule
- Fiber development
- Mutant
- Plant hormones