4. What is Morphology ??
๏ถThe branch of biology that studies the structure and
form of animals and plants.
๏ถThe study of the form and structure of plants and
animals.
5. CONโฆ.
๏ถRelated Words :
๏Biological science, biology - the science that
studies living organisms
๏Anatomy, general anatomy - the branch of
morphology that deals with the structure of
animals
6. Morphology of RICE
๏ถGerminating Seed: When the seed
germinates in well-drained and well-aerated soil, the
coleorhiza, a covering enclosing the radicle or primary
root, protrudes first.
Fig. 1 - The coleorhiza protrudes first.
7. CONโฆ
๏ถThe radicle or primary root breaks through the
covering.
๏ถTwo or more sparsely branched seminal roots follow
9. CON:
๏ถTiller : The seedling will grow and develop
branched tillers.
Fig. 7 - Parts of the rice tiller.
๏ถThere are two kinds of mature roots:
1. secondary adventitious roots
2.adventitious prop roots.
10. CONโฆ
๏ถSecondary adventitious roots are produced from the
underground nodes of young tillers.
Fig. 9 - Secondary adventitious roots.
๏ถ Fig. 10 - Adventitious prop roots.
11. CONโฆ
๏ถCulm: The culm, or jointed stem of the rice, is made
up of a series of nodes and internodes.
Fig. 11 - Culm, nodes, and internodes.
๏ถThe node is the solid portion of the culm.
Fig. 13 - Leaf, node, and bud.
12. CONโฆ
๏ถEarly tillers arise from the main culm in an alternate
pattern.
Fig. 14 - Primary tillers.
Fig. 15 - Secondary tillers.
Fig. 16 - Tertiary tillers.
13. CONโฆ
๏ถLeaf: The node or nodal region of the culm
will bear a leaf.
Fig. 17 - Leaf.
๏ถThe leaf sheath and leaf blade are continuous.
Fig. 20 - Leaf sheath and blade.
14. CONโฆ
๏ถPanicle and Spikletes: The terminal component
of the rice tiller is an inflorescence call the panicle.
Fig. 29 - Rice panicle.
๏ถThe panicles bear spikelets, most of which develop into
grains.
Fig. 34 - Spikelets.
15. CONโฆ
๏ถFloret: The floret includes the lemma, palea,
and the flower.
Fig. 37 โ Floret
๏ถThe larger protective glume covering the floret is called the
lemma and the smaller one is referred to as the palea.
Fig. 38 - Palea and lemma
16. CONโฆ
๏ถFlower: The floret contains a flower.
Fig. 41 - Pistil.
Fig. 43 - Anthers and filaments.
Fig. 44 - Stigma, style, and ovule.
17. CONโฆ
๏ถRice grain: The rice grain is the ripened ovary, with
the lemma, palea, firmly attached to it.
Fig. 46 - Rice grain.
๏ถThe dehulled rice grain is called caryopsis, the pericarp
tegmen and aleurone layers.
18. CONโฆ
๏ถThe remaining part of the grain consists of the
endosperm and the embryo.
Fig. 49 - Endosperm and embryo.
๏ถThe embryo contains the plumule (embryonic leaves) and the
radicle (embryonic primary root).
Fig. 50 - Plumule and radicle.