Original video: https://youtu.be/I328peyL6iY
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Delivered on: 30 OCTOBER 2023
Rice leaves grow alternately on the stem, with one leaf per node. The last leaf wrapping the panicle is called the panicle leaf or flag leaf. The leaves are the growth engine of the plant, as they capture solar radiation and produce carbohydrates. The plant breathes and perspires through its leaves. Leaf architecture may be erect, oblique or drooping; this depends on the variety and is an important factor in the ability to capture solar radiation.
The sheath is the leaf part that wraps the leaf. At the junction point between the leaf and the collar, two elements can be found: the auricle and the ligula.
The auricle is a 2 to 5 mm appendix, crescent-shaped and covered with hair.
The ligule is a membrane whose length and shape depend on species and variety; it is rather long in O. sativa, but short and round in O. glaberrima. Rice is the only Gramineae possessing both ligule and auricle, which allows distinction from weeds at the seedling stage.
Vegetative Phase Measurement for Rice Leaf:
1. Plant Height
2. Tiller number per hill Sheath length
3. Leaf Blade length
4. Leaf Blade width
5. Leaf Blade thickness
6. Leaf Sheath
7. Leaf Color (SPAD for chlorophyll content_
8. Leaf Area
9. Large Vein Number
10. Vein density
11. Interveinal Gap distance
Video Timestamps:
0:00 Introduction
Habits, living things, growing & developing, physical characteristics.
4:02 Crop Growth Cycle
Plant life cycle (perennial, biennial, annual), vegetative stage, reproductive stage, senescence stage/plant ageing
6:48 Vegetative Stage
Germination, plumule, radicle, rice seedling, side shoots/offshoots (tillers), yield of rice
9:35 Reproductive stage
Hill (clumps), stem elongation, flower formed, elongation of base of rice, emergence of floral stalk, spikelet, flower arrangement (Inflorescence), panicle (shape of fluorescence)
11:38 Spikelet
Lemma, palea, awn
13:12 Vegetative Rice Stage (Structure of the Rice Plant)
Distinguish between rice & regular weeds grass, rice leaf sheath, leaf blade (laminar), a unit of rice leaf
17:20 Distinguish between rice plant & weedy grass
Junction between leaf sheath & tiller (joint), ligule, auricle (ear)
19:45 Vegetative Data/ Agronomic Data
Plant height, tiller numbers, leaf sheath length, leaf blade length
23:20 Leaf Blade (Further Dimensional Measurement)
Leaf length, leaf width, leaf gauge-leaf thickness, SPAD metre-total chlorophyll content, green colour-chlorophyll
27:05 Leaf Area
29:25 Leaf Veins
Midvein, large vein, small vein, large vein number, tracing method, adaxial (upper side of the leaf), abaxial (underside of the leaf)
32:44 Formation of Derivation Data
Combine two things to get one new parameter, vein density, intervener gap (width between two veins)
38:08 Leaf Sheath Thickness
Vernier caliper
40:40 Hill Circumference
Plant moisture level, tiller density/hill, soil suffocation (Asphyxia-lack of oxygen)
43:26 Phenotyping
Variety, favourable breeding characteristics/traits, eventual yields, narrow intervener gap of leaf
45:00 End of Lecture Session
Keywords: Rice plant anatomy, rice morphology, vegetative stage rice, rice growth cycle, agronomic data collection, plant science, crop science, biometry, rice tiller, leaf sheath, leaf blade, ligule, auricle, plant height measurement, leaf area measurement, vein density, intervenal gap, chlorophyll content
Location:
Faculty of Agriculture, Universiti Putra Malaysia
Fakulti Pertanian, Universiti Putra Malaysia, 43000 Seri Kembangan, Selangor
XPMM+9J Seri Kembangan, Selangor
2.9845517506267742, 101.73803356324866
Attribution 4.0 International — CC BY 4.0 - Creative Commons
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