Growth stages of a rice plant

Experience from other hubs Origin and taxonomy Rice belongs to the family of Gramineae and the genera Oryzae.

Growth stages of a rice plant

The three main growth stages of the rice plant: Vegetative germination to panicle initiation Reproductive panicle initiation to flowering Ripening flowering to mature grain Slide3: Growth stages of rice A. Germination begins when the seed coat has imbibed adequate water becoming soft and elastic.

Germination starts with the appearance of the young shoot and root through the seed coat at one end of the seed. As the shoot elongates and reaches the soil surface, emergence occurs. When rice is planted on the soil surface, germination and emergence occur almost simultaneously.

Seed Germination — days 2. Seedling Emergence O ccurs when the first internode called the mesocotyl has elongated and pushed the tip of the rice coleoptile first sheathing leaf through the soil surface. The length of the mesocotyl varies with cultivars.

Pre- Tillering T he period from the development of the first to fourth leaf stage requires 15 to 25 days. During this time, the seminal roots further develop, the secondary or lateral roots Growth stages of a rice plant and the first four leaves appear.

After seedling emergence a new leaf emerges for every to accumulated DD50 units. Tillering Usually begins at the fifth leaf stage when the first tiller is visible and emerges from the axillary bud of the second leaf on the culm.

Tillering continues when the sixth leaf emerges, the second tiller comes from the axillary bud of the third leaf. During this period, the secondary roots grow down until flooding. Once flooded, these roots grow both vertically and laterally.

Vegetative Lag Phase It is the period from the end of active tillering to the beginning of the reproductive stage.

Growth stages of a rice plant

Height and stem diameter continue to increase but at a slower rate. In a day rice cultivar, the lag phase period may last more than two weeks. The reproductive stage usually lasts approximately 30 days in most varieties. This stage is sometimes referred to as the internode elongation or jointing stage and varies slightly by variety and weather conditions.

Panicle Initiation PI It is the time when the panicle premordia initiate the production of a panicle in the uppermost node of the culm.

At this point, the panicle is not visible to the naked eye. It is sometimes referred to as the green ring stage in rice. A thin green band is visible just above the top node, and represents the very beginning of internode elongation and is evident for only a couple of days. Internode Elongation Begins about the time panicle initiation is occurring, continues until full plant height is reached and is followed by heading.

The top five internodes may elongate. Stem internodes can be distinguished from root internodes by the green color in the stem wall. At this point, the panicle is 1 to 2 mm in length and the branching of the panicle is visible.

This is a critical stage during rice plant development. At this stage, the environment can have a major effect on rice plant development. The second yield component, number of potential grains per panicle, is set by the time this development stage occurs.

PSTU-STUDY: GROWTH PHASES AND STAGES OF RICE PLANT They are generally separated into the vegetative and reproductive phases or stages of growth.
Growth phases - Ricepedia WhatsApp Learn about our rice plants growth stages through the first 3 weeks after planting.
How is rice grown - Ricepedia From germination to panicle initiation.
Our Rice Plants Growth Stages are Amazing! - Rice Farming TV Seed quality and selection Seed is a living product that must be grown, harvested, and processed correctly in order to realize the yield potential of any rice variety.

Booting This stage is loosely defined as that period characterized by a swelling of the flag leaf sheath which is caused by an increase in the size of the panicle as it grows up the leaf sheath. Full or late boot occurs when the flag leaf has completely extended. Booting is the stage in which meiosis occurs.

Environmental stress during this stage may reduce rice grain yield. It is the time when the panicle begins to exsert from the boot. Heading may take over 10 to 14 days due to variations within tillers on the same plant and between plants in the field. Anthesis It is refers as the events between the opening and closing of the spikelet floret and lasts for 1 to 2.

Anthesis generally occurs between 9 a. The steps involved are:The rice plant has round and hollow stems, flat leaves, and panicles at the top of the plant. Rice is a very flexible/adaptable plant that grows well under both flooded and rainfed conditions.

The plant comprises vegetative organs: roots, stems, leaves, and reproductive organs; the latter is the panicle made up of spikelets. Apr 02,  · Growth stages of the rice plant The growth of the rice plant may be divided into three phases: 1.) The vegetative phase which runs from germination to panicle initiation.

2.)The reproductive stage which runs from panicle inititation to flowering. 3.) The ripening phase which runs from flowering to 6K. Germination in rice occurs when the first shoots and roots start to emerge from the seed and the rice plant begins to grow.

To germinate, rice seeds need to absorb a certain amount of water and be exposed to a temperature range of 10–40 °C. This breaks the dormancy stage of the seed. water-seeded rice (Figure ).


The V1 growth stage (Figure ) occurs when the first complete leaf pushes through the prophyll and forms a formed from the coleoptilar node. The V2 growth stage occurs when the second leaf is fully emerged and progresses accordingly.

Learn about our rice plants growth stages through the first 3 weeks after planting. Our rice crop was seeded in the month of May after a late start due to spring California rains.

It's a great feeling to have all the tractor work .

Growth phases - Ricepedia

The three main growth stages of the rice plant: The growth of the rice plant is divided into three stages: 1. vegetative (germination to panicle initiation); 2. reproductive (panicle initiation to flowering); and.

3. ripening (flowering to mature grain) Roll your mouse over the colored boxes Note: In the tropics, the reproductive stage is about 35 days and the .

Life Cycle of a Rice Plant | Garden Guides