Calculation of parameters of ecological plasticity and stability of oil sunflower varieties bred in VNIIMK

In 2016–2019 we studied ecological plasticity and stability by yield of five oil sunflower varieties. Estimation was conducted by two different methods that allow studying in details sunflower varieties by this trait. Calculation made due to S.A. Eberhart and B.А. Rusell’s method that all studied genotypes possess high ecological plasticity (coefficient of linear regression > 1). The variety Master appeared to be the most plastic (bi = 2.0). The varieties Skormas and SUR (С. 855) are the most homeostatic; their mean-squared deviation coefficients are 11.9 and 14.1, respectively. When cultivation conditions are worsened technological qualities of these varieties will be kept without any significant changes. Studying of parameters of adaptability due to R.A. Udachin’s method showed the variety Skormas is stable one, having a coefficient of resistance of stability index (R) equal to 42.9%. Less stable are the following varieties: Umnik (coefficient 25.7%), R-453 (Rodnik) – 1.9%; С. 855 – 33.2%. Calculations for the sunflower variety Master appeared to be statistically unreliable. According to our calculation of a parameter of ecological plasticity, the most responsive on improvement of cultivation conditions is the variety Master, having an intensity indicator (I) equal to 20.1%. The variety Skormas 32 with a coefficient I = 9.7% is less plastic in a range of the studied genotypes.

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Characterization of Biodiesel from residual friture oil, sunflower, through the ethanolic base transesterification process

Veritas ◽

10.35286/veritas.v20i2.243 ◽

2019 ◽

Vol 20 (2) ◽

pp. 55

Author(s):

Hugo Jimenéz-Pacheco ◽

Javier Alonso Villegas Aragón ◽

María del Carmen Camiña Pacheco ◽

Gregorio Urbano Palma Figueroa ◽

Lilia Mary Miranda Ramos

Keyword(s):

Organic Waste ◽

Research Work ◽

Energy Condition ◽

Stability Index ◽

Technical Standard ◽

Residual Oil ◽

Oxidative Stability Index ◽

Global Concern ◽

Oil Sunflower

The conservation of the environment is becoming a global concern for the use of fuels from fossil waste, and the production of biodiesel from renewable sources is being considered as an eco-friendly alternative since oleaginous organic waste presents potential as Energy condition An important aspect is to minimize the impacts generated by this waste under different conditions, and an operation related to the aspect is the elaboration and comparison of biodiesel obtained from residual frying oils with biodiesel produced with sunflower oil through the transesterification process based on ethanol. The evaluation was carried out on a laboratory scale with parameters and specifications found in the Peruvian Technical Standard for Biodiesel (NTP-321.12-200-2008), with the exception of water content, and the oxidative stability index (IEO). The following results were obtained 739.7 mg / kg and 1.5 hours and these do not meet the standards whose minimum reference corresponds to 500 mg / kg and 3 hours, respectively. The yield of residual oil and sunflower corresponds to 68.5% and 85.2% respectively. The research work establishes that the production of biodiesel from residual frying oil by the ethanol-based transesterification process is significantly less than the process with sunflower oilseeds, showing greater performance and stability.

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ECOLOGICAL EVALUATION OF STABILITY AND PLASTICITY OF SPRING SOFT WHEAT VARIETIES OF DIFFERENT VARIETY CHANGING PERIODS

Izvestiâ Timirâzevskoj selʹskohozâjstvennoj akademii ◽

10.26897/0021-342x-2020-3-142-149 ◽

2020 ◽

pp. 142-149

Author(s):

N.V. DAVYDOVA ◽

◽

A.O. KAZACHENKO ◽

A.V. SHIROKOLAVA ◽

V.A. NARDID ◽

...

Keyword(s):

Stability Index ◽

Climatic Conditions ◽

Soft Wheat ◽

High Yield ◽

Wheat Varieties ◽

Ecological Plasticity ◽

Spring Soft Wheat ◽

Wide Range ◽

High Yields ◽

High Level

The paper presents an analysis of spring soft wheat varieties of different periods of variety change according to ecological plasticity and stability when cultivated in different climatic conditions (2014–2019). To increase the yield of spring soft wheat varieties, much attention is paid to the devlopment of high-intensity forms that respond positively to additional investments in agricultural technology. These varieties must also demonstrate high yield stability as well as plasticity in relation to environmental factors – i.e. the ability to form the high yields in wide range of environmental conditions. In the course of the study, the authors carried out an environmental assessment of ten varieties of four major groups by yield in a five-year field experiment. The yield upper limits, as well as an indicator of stress resistance, were estimated. Based on these data, statistical coefficients of their ecological plasticity and stability, as well as the stability variant, were analyzed. The Agatha and Esther spring wheat varieties showed the most responsiveness to the improvement of cultivation conditions. They can be considered the most plastic varieties. The highest stability index was observed in the Radmir, Amir, MIS, Zlata and Lyubava varieties. The most promising among the new spring soft wheat varieties is the Radmira variety, which has the best adaptive potential, which incidentally allows it to form a stable high level of productivity in changeable climatic conditions. Among the varieties of earlier periods, promising cultivars include the Zlata variety. Its high adaptability is comfirmed by its cultivation in 1,2,3,4 and 7 regions of Russia.

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Method of assessment ecological plasticity of cereal crop varieties

Siberian Herald of Agricultural Science ◽

10.26898/0370-8799-2020-2-12 ◽

2020 ◽

Vol 50 (2) ◽

pp. 100-108

Author(s):

I. G. Grebennikova ◽

A. F. Cheshkova ◽

P. I. Stepochkin ◽

A. F. Aleynikov ◽

D. I. Chanyshev

Keyword(s):

Selection Index ◽

Field Research ◽

Stability Index ◽

Environmental Index ◽

Environmental Variance ◽

Wheat Varieties ◽

Phenotypic Characters ◽

Ecological Plasticity ◽

Bare Fallow ◽

The Stability

The results of testing new Agrostab computer program “Indicators of stability of agricultural crops varieties” based on long-term (2017–2019) field research data in Novosibirsk region are presented. The program implements modern methods for assessing the ecological plasticity of varieties and allows to evaluate the stability of genotypes by a set of phenotypic characters. The research material was common spring wheat varieties from the Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences (Novosibirskaya 15, Novosibirskaya 31, Sibirskaya 12), and collection forms of spring hexaploid triticale from the VIR world collection Lt-F6544-6 (k-3992), variety Ukro (k-3644) and Sears 57 × Ukro hybrid received as a result of breeding. The samples had a different ecological and geographical origin and belonged to different ripeness groups. Plants were grown organically without the use of fertilizers and pesticides. They were sown at different times after bare fallow in four repetitions. In the course of the experiment, the following genotype stability indicators were determined: environmental variance, coefficient of homeostaticity, weighted homeostacity index, steadiness of stability index, coefficient of multiplicativity, specific adaptive ability, superiority measure, ecovalence, regression to environmental index, non-parametric stability index. The necessity of using the complex value of the integrated selection index to calculate the parameters of plasticity and genotype stability is shown. Testing of the Agrostab program for breeding of spring triticale made it possible to determine the targeted vector for the selection of varieties in the agroclimatic conditions of Western Siberia and adaptive samples to be included in hybridization. The use of new models and methods of statistical data analysis to determine the environmental plasticity of varieties and hybrids will increase the efficiency of the breeding process.

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