light · Growth · Oryza sativa (rice)

The Interaction of Light Intensity and pH Values of Nutrient Medium in the Growth, Yield, and Chemical Composition of Rice Plants. · 1942

• positive
  Light reduced to 0.65 of daylight produced more rice dry matter.
• negative
  Further light reduction substantially decreased rice dry matter.

The effect of double treatments of the high temperature vernalization by the electric hot seed-bed and of the short day photo-periodism on the growth and yields of rice species. · 1951

• positive
  Combined seedling treatments accelerated growth and ripeness of some rice species in paddy fields.

Effect of tha day-length on the root development in the paddy-rice (Preliminary) · 1952

• positive
  In a 24-hour day length, the short-day rice variety showed increased root number and root and shoot dry matter.
• no effect
  In a 24-hour day length, the day-neutral rice variety showed no increment in root number or dry matter.

After-effect of photoperiodism in relation to development and yield of rice plant : (III) Effect of growth and time of heading of rice plant. · 1953

• positive
  Short-day treatment increased rice height in the seed bed versus controls.

  compared with control plants

• negative
  Long-day treatment resulted in shorter rice plants in the seed bed.
• no effect
  After transplantation, long-day-treated and control plants did not differ in height.

  compared with the control

Studies on the Emergence of Rice Seedlings in the Direct-Sowing Culture. : 1. On the elongation of plumule through soils after germination. · 1966

• positive
  Plumule growth at 3 cm seeding depth and in darkness was more rapid than at 5 cm and 7 cm seeding depths.

  compared with 5 cm-and 7 cm-seeding-depth plots

PHYTOCHROME ACTION IN ORYZA SATIVA L.<subtitle>I. GROWTH RESPONSES OF ETIOLATED COLEOPTILES TO RED, FAR-RED AND BLUE LIGHT</subtitle> · 1967

• positive
  Brief red light promoted elongation of excised coleoptile segments in buffer.
• negative
  Blue light somewhat prevented intact rice coleoptile growth.
• negative
  Red light strongly inhibited intact rice coleoptile growth.
• negative
  Far-red light somewhat prevented intact rice coleoptile growth.

cited by 1 paper here

Ethylene and the Responses to Light of Rice Seedlings · 1974

• positive
  Light set to produce phytochrome decay of about 10% per hour or less induced moderate, sustained coleoptile elongation regardless of wavelength.
• positive
  In air without added ethylene, red, far-red and yellow-green light promoted coleoptile elongation only in very young rice seedlings.

  compared with air without added ethylene

• negative
  Light inhibited first-internode elongation with or without ethylene in rice seedlings.

cites 1 paper herecited by 1 paper here

Photosynthetic Characterisation of Rice Varieties in Relation to Growth Irradiance · 1988

• positive
  Bellemont and Lemont increased leaf thickness at high photon irradiance.

Effects of light and nitrogen and their interaction on the dynamics of rice—weed competition · 1993

• positive
  Reduced light did not cause a proportionate decrease in rice growth.

Relation Between Axillary Bud Growth and Matter Accumulation of Stem-Sheath After Heading of Main Crop in Hybrid Rice · 1997

• positive
  Improved light accelerated axillary bud growth after about 20 days.

Studies on the Effect of the Relative Humidity of the Atmosphere on the Growth and Physiology of Rice Plants · 2000

• positive
  Low light-period and high dark-period humidity significantly increased leaf blade length, the number of roots, total root length versus low humidity in both periods.

  compared with low humidity in both light and dark periods

• positive
  Low light-period and high dark-period humidity significantly increased rate of leaf emergence, plant height, leaf area versus low humidity in both periods.

  compared with low humidity in both light and dark periods

Effects of Isochronal Exogenously Applied Synthetic-GA3, Fungal-Gibberellic Acid and Red Light on the Sheath Length of the Second Leaf of Oryza Sativa L.cv. Tan-ginbozu · 2001

• positive
  Red light promoted second-leaf growth more than fluorescent light.

  compared with fluorescent light

Effects of Isochronal Exogenously Applied Synthetic-GA3, Fungal-Gibberellic Acid and Red Light on the Sheath Length of the Second Leaf of Oryza Sativa L.cv. Tan-ginbozu · 2001

• positive
  Red light promoted second-leaf growth more than fluorescent light.

  compared with fluorescent light

cites 1 paper here

The Influence of Temperature and Light on Grain filling, Dry Matter Production of Rice · 2003

• positive
  Low light increased rice ear dry matter partitioning rate.
• negative
  Low light and high temperature decreased rice dry matter assimilation rate and quantity.

Effects of the Proportion of NH_4~+ and NO_3~- on Callus Formation and Plant Regeneration of Embryo of Indica Rice (Variety Zhenshan 97) · 2004

• positive
  Twelve hours of light daily yielded a higher rice plantlet regeneration rate than continuous darkness.

  compared with dark all day

Effects of short day length treatment on major traits of photosensitive hybrid rice combination · 2005

• positive
  Artificial short days shortened growth duration by about 30 days.
• positive
  Natural short days shortened growth duration by about 60 days.

Effects of soil moisture on superficial roots and yield of rice · 2006

• positive
  Light water stress slightly promoted superficial root growth.

Plant regeneration in different genotypes of indica rice · 2007

• positive
  Callus induced and proliferated in the dark gave high plantlet regeneration and more plantlets per seed callus across genotypes.

Effects of different light quanlities and illumination supplement on growth and photosynthetic rate of rice seedling · 2007

• positive
  Rice seedlings treated with blue light were much stronger than seedlings under the other light qualities.

  compared with the others

• positive
  Illumination supplements obviously enhanced the growth of rice seedlings compared with seedlings under natural daylight.

  compared with natural conditions in daylight

AGROBACTERIUM MEDIATED GENETIC TRANSFORMATION IN RICE USING Cry 1Ac & Cry 1B genes · 2008

• positive
  Callus induction in light exceeded dark in both rice genotypes.

  compared with dark

• positive
  Callus appeared earlier in light incubated cultures.

Effect of different light qualities on seedling growth in rice · 2010

• positive
  Red LEDs significantly promoted rice seedling stem elongation.
• negative
  The rice root dry-to-fresh weight ratio was significantly lower under blue LEDs than fluorescent lamps.

  compared with TFL

• no effect
  Rice seedling root dry and fresh weights did not differ among four light qualities.

In vitro Culture of Wedelia trilobata Hairy Roots and Effect of Their Extract on Seed Germination · 2010

• positive
  Light cultured extract yielded 28.7% rice germination, higher than dark cultured extract.

  compared with ethanol- soluble extract of dark-cultured hairy roots

Photoperiod and temperature effects on the growth and development of rice (Oryza sativa L.) · 2011

• positive
  Each 2-hour increase in photoperiod increased dry matter at maturity by about 5 g per pot.

Comparative Proteomic Study Reveals the Involvement of Diurnal Cycle in Cell Division, Enlargement, and Starch Accumulation in Developing Endosperm ofOryza sativa · 2011

• positive
  Rice endosperm starch granules formed growth rings under normal light/dark cycles but not constant light.

  compared with constant light

[Effects of light quality on rice seedlings growth and physiological characteristics]. · 2011

• positive
  Red-blue LED increased root number, stem diameter and healthy index at three-leaf stage.

  compared with fluorescent light

• positive
  Red-blue LED increased fresh mass, dry mass and healthy index at five-leaf stage.

  compared with fluorescent light

• positive
  Red LED increased the stem diameter and healthy index at three-leaf stage.

  compared with fluorescent light

cited by 3 papers here

Establishment of Fast Agrobacterium-mediated Transformation System of Indica Rice Kehui 675 · 2012

• positive
  Continuous high temperature and illumination completed callus induction and subculture in 10-14 d and efficiently shortened the callus period.

Studies on Methods of Agrobacterium-mediated Transformation of Indica Rice(Shuhui 527) · 2012

• positive
  Mature embryo callus growth was best under light at 32℃.

Effects of light quality on the organs structure and photosynthesis characteristics of the hybrid rice'Kangyou 63'seedlings · 2013

• positive
  Blue light significantly increased root and epigenetic-catheter diameter.

Effects of Water Stress on Root and Yield of Rice at Different Growth Stages · 2013

• positive
  After rewatering, roots following light or moderate heading-stage stress were stronger than controls.

  compared with the control

Establishing and Optimizing Callus Induction and Regeneration System from Mature Embryo of Indica Rice Variety Zhenshan 97B · 2013

• positive
  The reported culture condition produced a maximum callus induction frequency of 96.40%.
• positive
  The reported culture condition produced a maximum plant regeneration rate of 92.07%.

Impact of IAA, GA_3, and ABA on Negative Root Phototropism and Root Growth of Rice · 2014

• positive
  Unilateral light and exogenous IAA induced many root hairs in Yangdao 6.

Effect of LED on Plant Growth and Development in Space Culture Chamber Simulator · 2015

• positive
  The optimum red to blue ratio for rice growth was around 3.9.

Rice yield corresponding to the seedling growth under supplemental green light in mixed light-emitting diodes · 2016

• positive
  Adding green light enhanced rice seedling shoot and root growth.

  compared with red and blue LEDs

cited by 3 papers here

Effects of Light-Emitting Diode Irradiation on Growth Characteristics and Regulation of Porphyrin Biosynthesis in Rice Seedlings · 2017

• positive
  Leaf area and shoot biomass of rice seedlings were greater under white and blue LEDs than under green and red LEDs.

  compared with green and red LEDs

cited by 1 paper here

Development of an efficient in vitro plant regeneration protocol for indica rice varieties (Oryza sativa L.) in the Mekong Delta of Vietnam · 2017

• positive
  Complete darkness gave the best callus induction in IR64.
• positive
  Sixteen hours per day of light gave the best callus induction in MTL250.

Development of a Technique for Callus Induction and Plant Regeneration in Oryza sativa L. var. MRQ74 and MR269 · 2017

• positive
  Both rice varieties had maximum callus induction on MS medium with 3 mg/L 2, 4-D and 0.1 mg/L BAP in darkness.

Effects of silicon on Oryza sativa L. seedling roots under simulated acid rain stress · 2017

• positive
  Low or moderate Si combined with light acid rain enhanced rice root growth, more strongly than the single treatment.

  compared with single treatment

cited by 1 paper here

Alleviatory effects of silicon on the foliar micromorphology and anatomy of rice (Oryza sativa L.) seedlings under simulated acid rain · 2017

• positive
  Combined moderate Si (2.0 mM) and light SAR enhanced the development of rice mesophyll cells
• positive
  Combined moderate Si (2.0 mM) and light SAR enhanced the growth of rice leaves

cites 1 paper here

Dark Septate Endophytic Fungi Increase Green Manure-15N Recovery Efficiency, N Contents, and Micronutrients in Rice Grains · 2018

• positive
  DSE interaction increased rice dry matter accumulation in full grain and panicle.

Effects of Cultivation Media on In vitro Callus Induction and Regeneration Capabilities of Pakaumpuel Rice (Oryza sativa L.), Thai Rice Landrace · 2018

• positive
  MS medium with 2 mg/l 2,4-D in light gave the highest callus induction percentage (80 %).

Effects of light-emitting diodes on tissue culture plantlets and seedlings of rice (Oryza sativa L.) · 2020

• positive
  Under blue LED light, callus proliferation, differentiation and regeneration times were shortest.
• positive
  A 1:1 blue to red LED ratio facilitated rice seedling growth.

cites 1 paper here

Rooting ability of rice seedlings increases with higher soluble sugar content from exposure to light · 2020

• positive
  Root dry weight increased by 120.0% as light exposure increased from 3 to 12 hours.

  compared with 3 hours

• positive
  Root fresh weight increased by 91.7% as light exposure increased from 3 to 12 hours.

  compared with 3 hours

The Effects of Different Artificial LED Light Compensation for Rice Crops · 2021

• positive
  White LED increased plant height at the stated significance threshold.
• positive
  White LED produced the best leaf length, averaging 103.53 cm.

Effect of Red, Blue, Green LEDs on the Germination and Seedling Growth of Rice · 2022

• positive
  Red-blue-green LEDs increased germination in BRRIdhan52 and BRRIdhan75 versus dark.

  compared with dark

• positive
  First leaf length was greater in darkness than under LEDs.

  compared with LEDs treatment

• positive
  Fresh and dry seedling weight were highest under red-blue-dark LEDs.

cites 2 papers here

Effect of Light-Emitting Diodes on Different Growth Stages of Rice · 2022

• positive
  Red and blue light increased seedling fresh and dry weight in most varieties.
• positive
  Red light increased rice seed germination significantly compared with the control.

  compared with the control

• positive
  Red and blue light increased first leaf length, first leaf blade length and root length in most varieties.
• negative
  Blue light decreased rice germination percentage with little difference.

cites 3 papers here

Auxin plays a role in the adaptation of rice to anaerobic germination and seedling establishment · 2022

• positive
  Light promoted rice seedling establishment and enhanced anaerobic germination tolerance.

cited by 1 paper here

The Impact of Carbohydrate Management on Coleoptile Elongation in Anaerobically Germinating Seeds of Rice (Oryza sativa L.) under Light and Dark Cycles · 2023

• positive
  Light and dark cycles increased coleoptile length in LG relative to constant darkness.

  compared with constant darkness

• positive
  Light and dark cycles increased coleoptile length in IR64 relative to constant darkness.

  compared with constant darkness

• positive
  Light and dark cycles increased coleoptile length in Takanari relative to constant darkness.

  compared with constant darkness

Simultaneous Application of Red and Blue Light Regulate Carbon and Nitrogen Metabolism, Induces Antioxidant Defense System and Promote Growth in Rice Seedlings under Low Light Stress · 2023

• positive
  Combined red and blue light promoted leaf and root growth.
• positive
  Combined light increased root volume.

cited by 1 paper here

Photomorphogenesis and Photosynthetic Traits Changes in Rice Seedlings Responding to Red and Blue Light · 2023

• positive
  Combined red and blue light increased root number, root volume and root activity of rice seedlings, compared with white light control.

  compared with white light (CK)

• positive
  Combined red and blue light promoted growth of rice seedlings to varying degrees, compared with white light control.

  compared with white light (CK)

cites 1 paper here

Effects of tea application on cadmium, phosphorus, and iron accumulations in rice (Oryza sativa L.) seedlings · 2023

• positive
  Only the black and dark teas increased the biomass of rice seedlings.

SpeedyPaddy: a revolutionized cost-effective protocol for large scale offseason advancement of rice germplasm · 2024

• positive
  A photoperiod of 13 h light and 11 h dark during seedling and vegetative stages reduced mean plant height and tillering in rice.

Enhancing rice growth in adverse conditions: the role of dark septate endophytes in salt and water scarcity tolerance · 2025

• positive
  Direct DSE treatment increased shoot germination by 60%.

Effect of different artificial light source on rice seedling quality under closed stereo cultivation · 2025

• positive
  Rice seedling growth strength under the tested light sources followed the order W > NL > TFL > RB > R > B.

  compared with natural light (NL)

Research on Simplified Nursery and Labor-Saving Mechanized Transplanting Technologies to Improve Rice Production Efficiency in Southern China · 2025

• positive
  Double-blanket seedlings on lightweight substrates were 47.46% lighter in fresh weight than double-blanket seedlings raised with soil.

  compared with double-blanket seedlings raised with soil

• no effect
  Fresh weight of double-blanket seedlings on lightweight substrates was comparable to single-blanket seedlings grown in soil.

  compared with single-blanket seedlings cultivated in soilNo difference from an alternative treatment

Enhancing rice seedling architecture and physiology in plant factories: an integrated approach via optimized light intensity and sowing density · 2026

• positive
  LH-D2 promoted aboveground fresh and dry weight and underground dry weight.
• positive
  LH-D2 improved total root length, surface area and intersection number.