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Biology and Biotechnology of the Plant Hormone Ethylene II (Hardcover, 1999 ed.)
Loot Price: R6,160
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Biology and Biotechnology of the Plant Hormone Ethylene II (Hardcover, 1999 ed.)
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The inflorescence of the monoecious maize plant is unique among the
Gramineae in the sharp separation of the male and female
structures. The male tassel at the terminus of the plant most often
sheds pollen before the visual appearance of the receptive silks of
th the female ear at a lateral bud, normally at the 10 leaf [I].
Earlier studies examined the ontogeny of the growing tissues
beginning with the embryo in the kernel through to the obvious
protuberances of the growing point as the kernel germinates. The
differentiated developing soon-to-become tassel and the lateral
bulges that develop into the ears on the lateral buds become
apparent very early in the germinating kernel [2, 3, 46]. A certain
number of cells are destined for tassel and ear development [8]. As
the plant develops, there is a phase transition [\3, 16] from the
vegetative lateral buds to the reproductive lateral buds. This
change in phase has been ascribed to genotypic control as evidenced
in the differences among different genotypes in the initiation of
the reproductive [I]. The genetic control of tassel and ear
initiation has been gleaned from anatomical observations. Lejeune
and Bernier [I2] found that maize plants terminate the initiation
of additional axillary meristems at the time of tassel initiation.
This would indicate that the top-most ear shoot is initiated on the
same day as the initiation of tassel development and this event
signals the end of the undifferentiated growing point.
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