Growthstageofriceplant(水稻生长阶段全英文版)(5篇模版)
Growthstageofriceplant（水稻生长阶段全英文版）（5篇模版）
第一篇：Growth stage of rice plant(水稻生长阶段 全英文版)
Table Of Contents TABLE 1 OVERVIEW 2 THREE 2 GROWTH 3 .8
9 Stage 14
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Stage 7Dough 26 Stage 9Germination to emergence
Seeds are usually pregerminated by soaking for 24 hours and incubating for another 24 hours.After pregermination the radicle and plumule protrude through the hull.By the second or third day after seeding in the seedbed, the first leaf breaks through the coleoptile.8 The end of stage 0 shows the emerged primary leaf still curled and an elongated radicle.Stage 1Tillering
This stage extends from the appearance of the first tiller until the maximum tiller number is reached.Tillers emerge from the axiliary buds of the nodes and displace the leaf as they grow and develop.This seedling shows the position of the two primary tillers with respect to the main culm and its leaves.After emerging, the primary tillers give rise to secondary tillers.This occurs about 30 days after transplanting.The plant is now increasing in length and tillering very actively.Here is a field with plants at the early tillering stage.Note the tiller size and canopy development due to increased leafing and tiller development.Besides numerous primary and secondary tillers, new tertiary tillers arise from the secondary tillers as the plant grows longer and larger.By this stage, the tillers have multiplied to the point that it is difficult to pick out the main stem.Til
lers continuously develop as the plant enters the next stage which is stem elongation.Stage 3Panicle initiation to booting
The initiation of the panicle primordium at the tip of the growing shoot marks the start of the reproductive phase.The panicle primordium becomes visible to the naked eye about 10 days after initiation.At this stage, 3 leaves will still emerge before the panicle finally emerges.In short-duration varieties, the panicle becomes visible as a white feathery cone 1.0-1.5 mm long.It occurs first in the main culm and then in tillers where it emerges in uneven pattern.It can be seen by dissecting the stem.As the panicle continues to develop, the spikelets become distinguishable.The young panicle increases in size and its upward extension inside the flag leaf sheath causes the leaf sheath t bulge.This bulging of the flag leaf sheath is called booting.Booting is most likely to occur first in the main culm.At booting, senescence(aging and dying)of leaves and nonbearing tillers are noticeable at the base of the plant.Stage 5Milk grain stage
The last 3 stages of growth, stages 7, 8, and 9 comprise the ripening phase.Stage 7.Milk grain stage
In this stage, the grain has begun to fill with a milky material.24
国际象棋游戏规则
The grain starts to fill with a white, milky liquid, which can be squeezed out by pressing the grain between the fingers.The panicle looks green and starts to bend.Senescence at the base of the tillers is progressing.The flag leaves and the two lower leaves are green.25
Stage 8Mature grain stage
The individual grain is mature, fully developed, hard, and has turned yellow.27
This slide shows rice plants at the mature grain stage.Ninety to one hundred percent of the filled grains have turned yellow and hard.The upper leaves are now drying rapidly although the leaves of some varieties remain green.A considerable amount of dead leaves accumulate at the base of the plant.28

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