INHERITANCE OF A SOYBEAN FLOWERING RESPONSE TO FLUORESCENT-DAYLENGTH CONDITIONS

1971 ◽  
Vol 13 (4) ◽  
pp. 703-707 ◽  
Author(s):  
R. I. Buzzell
Keyword(s):  
Glycine Max ◽  
Flowering Time ◽  
Major Gene ◽  
Day Length ◽  
Fluorescent Light ◽  
Dominant Allele ◽  
Flowering Response ◽  
Long Day ◽  
Glycine Max L ◽  
Delayed Flowering

The inheritance of flowering time was studied in the short-day soybean, Glycine max (L.) Merr., under long-day conditions in the greenhouse using natural day length extended to 20 hours with cool-white fluorescent light. A single, major gene with two alleles was found to control the flowering response. The dominant allele which gave a fluorescent-sensitive response of delayed flowering also resulted in later field maturity whereas the recessive allele which gave an insensitive response resulted in earlier maturity. The maturity symbols E3 and e3 are proposed for these alleles. Isolines have been developed.

Long-day effects on the terminal inflorescence development of a photoperiod-sensitive soybean [Glycine max (L.) Merr.] variety

Plant Science ◽  
2011 ◽  
Vol 180 (3) ◽  
pp. 504-510 ◽  
Author(s):  
Yan Jiang ◽  
Cunxiang Wu ◽  
Lingxiao Zhang ◽  
Po Hu ◽  
Wensheng Hou ◽  
...  
Keyword(s):  
Glycine Max ◽  
Inflorescence Development ◽  
Terminal Inflorescence ◽  
Long Day ◽  
Glycine Max L ◽  
Photoperiod Sensitive

scholarly journals Importance of the Interaction between Heading Date Genes Hd1 and Ghd7 for Controlling Yield Traits in Rice

2019 ◽  
Vol 20 (3) ◽  
pp. 516 ◽  
Author(s):  
Zhen-Hua Zhang ◽  
Yu-Jun Zhu ◽  
Shi-Lin Wang ◽  
Ye-Yang Fan ◽  
Jie-Yun Zhuang
Keyword(s):  
Grain Yield ◽  
Flowering Time ◽  
Indica Rice ◽  
Heading Date ◽  
Yield Traits ◽  
Grain Production ◽  
Growth Duration ◽  
Long Day ◽  
Panicle Number ◽  
Delayed Flowering

Appropriate flowering time is crucial for successful grain production, which relies on not only the action of individual heading date genes, but also the gene-by-gene interactions. In this study, influences of interaction between Hd1 and Ghd7 on flowering time and yield traits were analyzed using near isogenic lines derived from a cross between indica rice cultivars ZS97 and MY46. In the non-functional ghd7ZS97 background, the functional Hd1ZS97 allele promoted flowering under both the natural short-day (NSD) conditions and natural long-day (NLD) conditions. In the functional Ghd7MY46 background, Hd1ZS97 remained to promote flowering under NSD conditions, but repressed flowering under NLD conditions. For Ghd7, the functional Ghd7MY46 allele repressed flowering under both conditions, which was enhanced in the functional Hd1ZS97 background under NLD conditions. With delayed flowering, spikelet number and grain weight increased under both conditions, but spikelet fertility and panicle number fluctuated. Rice lines carrying non-functional hd1MY46 and functional Ghd7MY46 alleles had the highest grain yield under both conditions. These results indicate that longer growth duration for a larger use of available temperature and light does not always result in higher grain production. An optimum heading date gene combination needs to be carefully selected for maximizing grain yield in rice.

scholarly journals Effects of genes controlling the plant development rates on the formation of individual productivity of wheat and soybean

2018 ◽  
Vol 23 ◽  
pp. 261-266
Author(s):  
O. A. Avksentiieva ◽  
A. I. Zubrich ◽  
M. S. Vasilchenko ◽  
V. V. Shulik
Keyword(s):  
Triticum Aestivum ◽  
Glycine Max ◽  
Plant Development ◽  
Triticum Aestivum L ◽  
Isogenic Lines ◽  
Long Day ◽  
Development Rates ◽  
Individual Productivity ◽  
Glycine Max L ◽  
Soybean Plants

Aim. The aim of the work was to study the effects of genes controlling the plant development rates on the speed of transition to generative development and formation of individual productivity of isogenic lines of wheat (Triticum aestivum L.) and soybean plants (Glycine max (L.) Merr.) according to the genes. Methods. The experiments were carried out in the field conditions. The periods of sprouting and earing (PSE) of wheat, the periods of sprouting and flowering (PSF) and ripening (PSR) of soybean isogenic lines and the elements of the structure of individual productivity were determined. Results. It was shown that under conditions of a natural long day (16 hours), wheat plants with genotypes VRN-A1a, VRN-D1a, PPD-A1a and PPD-D1a more rapidly passed to the earing. In soybean isogenic lines, the presence of dominant alleles of the E-series genes increased the duration of phases of PSF and PSR. The maximum indicators of productivity elements were characterized by isogenic lines, developed at a faster rate. Conclusions. The genes controlling the development rates of soft wheat and soybean crops, defining the timing of the transition to generative development, determine their productivity. Keywords: Triticum aestivum L., Glycine max (L.) Merr., VRN, PPD, EE genes, rates of development, productivity.

scholarly journals Selection for later flowering in soybean (Glycine max L.Merrill) F2 populations cultivated under short day conditions

1999 ◽  
Vol 22 (2) ◽  
pp. 243-247 ◽  
Author(s):  
Antonio Carlos Baião de Oliveira ◽  
Carlos Sigueyuki Sediyama ◽  
Cosme Damião Cruz
Keyword(s):  
Glycine Max ◽  
Direct Selection ◽  
Juvenile Period ◽  
Selection Strategies ◽  
Expected Gain ◽  
Natural Photoperiod ◽  
Glycine Max L ◽  
Natural Temperature ◽  
Selection For ◽  
Delayed Flowering

Several different selection strategies were used to estimate expected gain of days to flowering and other related characters in two F2 soybean (Glycine max (L.) Merrill) populations. The sample originated from crosses of lines whose seeds do not contain the three lipoxygenase isozymes with the commercially cultivated IAC-12. IAC-12 is a gene carrier for an extended juvenile period. This study was conducted during the winter of 1994 in Viçosa, Minas Gerais. The plants were grown under natural photoperiod. One population was grown in a heated greenhouse, and the other in the field under natural temperature conditions. Lower temperatures early in the field planting caused a delay in flowering. Delayed flowering caused a broader amplitude in all characters evaluated, and resulted in higher selection gains for the field-grown plants than for the greenhouse-grown plants. Direct selection for number of flowering days proved to be efficient for improving this character in both populations. Gains were also obtained for other characters. Interactions of temperature and photoperiod and temperature and genotypes affected soybean flowering time and produced alterations in other correlated agronomic characters, including productivity.

scholarly journals The Interplay between Light Quality and Biostimulant Application Affects the Antioxidant Capacity and Photosynthetic Traits of Soybean (Glycine max L. Merrill)

Plants ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 861
Author(s):  
Ermenegilda Vitale ◽  
Violeta Velikova ◽  
Tsonko Tsonev ◽  
Ida Ferrandino ◽  
Teresa Capriello ◽  
...  
Keyword(s):  
Glycine Max ◽  
Light Quality ◽  
Bioactive Compound ◽  
Fluorescent Light ◽  
Antioxidant Compounds ◽  
Full Spectrum ◽  
Light Regimes ◽  
Glycine Max L ◽  
Pre Treatment ◽  
Photosynthetic Traits

This paper evaluates the combined effect of biostimulant and light quality on bioactive compound production and seedling growth of soybean (Glycine max L. Merrill) plants. Germinated seeds pre-treated with different concentrations (0.01%, 0.05%, 0.5%) of an amino acid-based biostimulant were grown for 4 days at the dark (D), white fluorescent light (FL), full-spectrum LED (FS), and red-blue (RB) light. Potential changes in the antioxidant content of sprouts were evaluated. Part of the sprouts was left to grow at FL, FS, and RB light regimes for 24 days to assess modifications in plants’ anatomical and physiological traits during the early developmental plant stage. The seed pre-treatment with all biostimulant concentrations significantly increased sprout antioxidant compounds, sugar, and protein content compared to the control (seeds treated with H2O). The positive effect on bioactive compounds was improved under FS and RB compared to D and FL light regimes. At the seedling stage, 0.05% was the only concentration of biostimulant effective in increasing the specific leaf area (SLA) and photosynthetic efficiency. Compared to FL, the growth under FS and RB light regimes significantly enhanced the beneficial effect of 0.05% on SLA and photosynthesis. This concentration led to leaf thickness increase and shoot/root ratio reduction. Our findings demonstrated that seed pre-treatment with proper biostimulant concentration in combination with specific light regimes during plant development may represent a useful means to modify the bioactive compound amount and leaf structural and photosynthetic traits.

scholarly journals Kadife (Tagetes erecta) Bitkisinde Gün Uzunluğunun Büyüme ve Çiçeklenme Üzerine Etkisi

2017 ◽  
Vol 5 (10) ◽  
pp. 1189 ◽  
Author(s):  
Nezihe Köksal ◽  
Sara Yasemin ◽  
Aslıhan Özkaya
Keyword(s):  
Flowering Time ◽  
Early Flowering ◽  
Day Length ◽  
Flowering Plant ◽  
Plant Canopy ◽  
Flower Bud ◽  
Bud Formation ◽  
Short Day ◽  
Long Day ◽  
Flower Bud Formation

Photoperiod is one of the environmental signals that controls of the flowering time on bedding plants. Marigold is a bedding plant which includes obligate or facultative short day and day neutral cultivars. Flowering time of these plants, even day neutral cultivars, delay in extreme hot and long day condition in summer. In this study, the effects of photoperiodic conditions (short day and long day) on flowering and growth of two different day neutral marigold cultivars (Discovery Orange and Discovery Yellow) were investigated. Natural day length (14 hours) was considered as long day condition. Short day condition (8 hours) was conducted artificially by darkening treatment. Therefore, duration to first flower bud formation, duration to first flowering, plant canopy height, plant canopy width, lateral branch number, flower number, main peduncle length, main peduncle thickness, root collar thickness, stem thickness, dry weights of plants (root, shoot, total plant) were evaluated. At the end of the experiment, it was determined that short day conditions reduce duration to first flower bud formation and duration to first flowering. The artificial short day conditions resulted as 13 days early flowering in 'Discovery Orange' and 5 days early flowering in 'Discovery Yellow' cultivar.

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