scholarly journals Comparative evaluation of seed productivity rapeseed (brassica napus), camelina (camelina sativa) and white mustard (sinapis alba) in conditions forest-steppe zone of Prebaikalia

2020 ◽  
Vol 548 ◽  
pp. 022083
Author(s):  
R A Sagirova ◽  
T B Vlasova ◽  
S V Shapenkova
Keyword(s):  
Brassica Napus ◽  
Comparative Evaluation ◽  
Steppe Zone ◽  
Sinapis Alba ◽  
Camelina Sativa ◽  
Forest Steppe ◽  
White Mustard ◽  
Seed Productivity

Midge (Diptera: Cecidomyiidae) injury to Brassicaceae in field trials in northeastern Saskatchewan, Canada

2018 ◽  
Vol 150 (5) ◽  
pp. 637-651 ◽  
Author(s):  
Lars Andreassen ◽  
Juliana Soroka ◽  
Larry Grenkow ◽  
Owen Olfert ◽  
Rebecca H. Hallett
Keyword(s):  
Brassica Napus ◽  
Field Trials ◽  
Sinapis Alba ◽  
Camelina Sativa ◽  
Undescribed Species ◽  
Yellow Mustard ◽  
Field Crops ◽  
Ethiopian Mustard ◽  
Contarinia Nasturtii ◽  
Oriental Mustard

AbstractTo determine resistance of Brassicaceae field crops to Contarinia Róndani (Diptera: Cecidomyiidae) midge complex (Contarinia nasturtii Kieffer and Contarinia undescribed species), field trials of two different host assemblages were undertaken near Melfort, Saskatchewan, Canada in 2014 and repeated in 2015. In both years the first midge adults appeared in early July, when most plants were starting to flower, and a second generation occurred in mid-August, past the period of crop susceptibility. In a trial studying 18 lines of six brassicaceous species, the lowest probability of midge injury was found on Camelina sativa (Linnaeus) Crantz lines in both years. No differences were found in the probability of midge injury among any of the 13 Brassica Linnaeus species lines tested, including commercial glyphosate-resistant and glufosinate-resistant Brassica napus Linnaeus canola lines, Ethiopian mustard (Brassica carinata Braun), brown or oriental mustard (Brassica juncea (Linnaeus) Czernajew), or Polish canola (Brassica rapa Linnaeus) lines. Probability of midge injury on Sinapis alba Linnaeus yellow mustard lines reached levels between those on Camelina sativa lines and those on Brassica lines. A second trial examining 14 current commercial glyphosate-resistant Brassica napus canola cultivars found no differences in susceptibility to midge feeding among any cultivars tested. More plants were damaged in 2015 in both studies, and damage reached maximum levels earlier in 2015 than in 2014.

scholarly journals Influence of climatic conditions on productivity and adaptability of Camelina sativa

2020 ◽  
Vol 224 ◽  
pp. 04006
Author(s):  
E L Turina ◽  
T Ya Prakhova
Keyword(s):  
Environmental Conditions ◽  
Steppe Zone ◽  
Camelina Sativa ◽  
Climatic Conditions ◽  
Forest Steppe ◽  
Hydrothermal Conditions ◽  
Middle Volga Region ◽  
Hydrothermal Coefficient ◽  
Climate Conditions ◽  
The Crimea

The purpose of the research is to assess the productivity and adaptability of Camelina sativa depending on the natural and climatic conditions of the forest-steppe zone of the Middle Volga region and the steppe Crimea. The researches were conducted in two regions (Penza and Crimea) with contrasting hydrothermal conditions in 2015–2019 years. Climate conditions in the years of researches were characterized by significant variability in both the degree of humidity and temperature regime in both regions. The hydrothermal coefficient in the Crimea varied in the range of 0.23–1.11, in the conditions of Penza - from 0.45 to 1.10. The index of environmental conditions varied from -0.58 to 1.28 units depending on the natural and climatic zone. On average, in 2015–2019, the productivity of Camelina changed from 1.45 to 1.79 t/ha in Penza and from 0.56 to 1.66 t/ha in Crimea. The highest yield of Camelina sativa was recorded in 2016 in Penza and in 2017 in the Crimea and amounted to 1.79 and 1.66 t/ha, respectively. The value of the index of environmental conditions is 1.17 and 1.28 with hydrothermal coefficient of 0.82 and 0.61, respectively. Depending on the conditions of the year and the region, the oil content varied from 33.9 to 43.9 %. At the same time, there is a tendency to decrease the amount of oil for all years of study in the direction from the Crimea to the zone of the Penza region. Camelina sativa is characterized by a high level of resistance to stressful conditions (0.49– 1.10), differs in environmental adaptability (bi=1.15–1.17), has a high fitness criterion, 41.2–41.5 g/m2, depending on the region.

Influence of glauconite on potato productivity under conditions of insufficient moisturization of the Southern Urals

2021 ◽  
Author(s):  
N.V. Glaz ◽  
◽  
A.K. Gorbunov
Keyword(s):  
Growing Season ◽  
Steppe Zone ◽  
Southern Urals ◽  
Forest Steppe ◽  
Seed Productivity ◽  
The Southern Urals ◽  
Opposite Pattern ◽  
Early Variety ◽  
Early Maturing ◽  
Chelyabinsk Region

Research 2019-2020 in the conditions of the forest-steppe zone of the Chelyabinsk region showed that the effect of glauconite on the yield and seed productivity of potatoes largely depends on the variety. The effect of glauconite (in doses from 10 to 40 t / ha) on the yield of tubers was proportional to the duration of the growing season of the varieties. The highest yield gains from glauconite were observed in the mid-ripening variety Tarasov – 4.05–4.62 t/ha, then in the medium-early variety Nevsky – 3.26–3.63 t/ha, and the smallest – were in the early variety Rosara – 1.95–2.26 t/ha. Whereas the effect of glauconite on the seed productivity of varieties had the opposite pattern: the greatest increase was observed in early-maturing varieties (Rozara – 1.30–1.56 times, Nevsky – 1.30–1.61 times), and the smallest – in the mid-season variety Tarasov (1.17–1.25 times).

scholarly journals Specialized pollinators and seed production of Trollius species introduced in Western Siberia

2018 ◽  
Vol 11 ◽  
pp. 00018
Author(s):  
Anastasiya Gusar ◽  
Lubov Buglova
Keyword(s):  
Seed Production ◽  
Larval Stage ◽  
Western Siberia ◽  
West Siberia ◽  
Steppe Zone ◽  
Forest Steppe ◽  
Seed Productivity ◽  
Production Increase

In five species of Trollius L., seed production of fruits was studied, plants being grown in culture in the forest steppe zone in Western Siberia. 2 species representing Chiastocheta genus were identified as specialized pollinators (Diptera, Anthomyiidae). Those insects pollinate the flowers and damage the seeds of three globeflower species: T. apertus, T. europaeus T. asiaticus. The flower season of other two species (T. chinensis and T. ledebourii) starts later and the plants can’t be exposed to invasion, as Chiastocheta flies are at their larval stage yet. Pollination of these species is performed by non-specialized agents. The lowest rate of seed production realization of about 20% is registered in T. europaeus, while in T. ledebourii it is the highest comprising 71%. We consider the flies of Chiastocheta genus as an important part of the complex of factors lowering seed productivity in Trollius and their relationship as parasitism. Thus, in West Siberia for Trollius seed production increase, measures intended to reduce Chiastocheta abundance will be useful.

scholarly journals Study and conservation of Iris aphylla L. during introduction in the Southern Urals

2020 ◽  
pp. 139-147
Author(s):  
L. F. Beksheneva ◽  
A. A. Reut
Keyword(s):  
Introduced Species ◽  
Steppe Zone ◽  
Southern Urals ◽  
Botanical Garden ◽  
Climatic Conditions ◽  
Research Centre ◽  
Cultivated Plants ◽  
Forest Steppe ◽  
Seed Productivity ◽  
The Southern Urals

The article provides information about some biological features of the rare species Iris aphylla L., listed in a number of regional Red books. Ten-year-old plants, introduced into the South-Ural Botanical Garden- Institute of Ufa Federal Research Centre of RAS, were studied. Phenological features of the species, indicators of seed productivity and morphometric parameters of cultivars were studied. The assessment of decorative qualities and success of introduction of I. aphylla is carried out. It was revealed that the seed-grown species of I. aphylla in the forest-steppe zone of the Bashkir Urals passes the full cycle of development. According to the terms of flowering, the introduced species is referred to the group of early-flowering irises. Seed productivity is estimated as average. According to the assessment of the decorative qualities I. aphylla is referred to medium decorative plants. The early and fairly long flowering has been noted, as well as the presence of several buds on the shoot. The success of the introduction was six points, that is, the introduced species regularly mass flowering, bears fruit, reproduces vegetative, has a high resistance to local climatic conditions. I. aphylla is recommended to replenish the zonal assortment of cultivated plants of the Republic of Bashkortostan.

scholarly journals Rhizomatous geophytes from the genus Hosta in Western Siberia

2021 ◽  
Vol 38 ◽  
pp. 00110
Author(s):  
Lyudmila Sedelnikova
Keyword(s):  
Comparative Analysis ◽  
Cross Section ◽  
Growth And Development ◽  
Western Siberia ◽  
Steppe Zone ◽  
Forest Steppe ◽  
Lower Epidermis ◽  
Seed Productivity ◽  
Is Research ◽  
Biological Features

This is research of biological features of the growth and development rhythm of 11 Hosta species in the conditions of forest-steppe zone of Western Siberia. A comparative analysis of the organogenesis of the species H. decorata, H. sieboldiana, and H. lancifolia is carried out. The seed productivity and viability of pollen of 9 species were established. It is provided the description of upper and lower epidermis, cross section of leaf. It is revealed that the structure of lamina is characterized by xeromesophytic characters. It is mentioned species specificity in arrangement of adaxial and abaxial stomas pursuant thereto leaves of two types of Hosta are amphistomatic and hypostomatic. It is concluded that on the lower epidermis of the leaf, the transpiration capacity is 3 – 8 times greater.

scholarly journals Reproductive capabilities of representatives of the genus Hosta Tratt. when introduced in the forest-steppe zone of Western Siberia

2021 ◽  
pp. 58-68
Author(s):  
L. L. Sedelnikova ◽  
Keyword(s):  
Western Siberia ◽  
Reproductive Potential ◽  
Pollen Grains ◽  
Weather Conditions ◽  
Steppe Zone ◽  
Seed Morphology ◽  
Forest Steppe ◽  
Seed Productivity ◽  
High Viability ◽  
First Time

In the forest-steppe zone of Western Siberia, a comparative study of seed productivity, flowering features, fruit and seed morphology, pollen fertilization ability was conducted for the first time in representatives of the Hosta Tratt genus: H. decorata, H. sieboldiana, H. lancifolia, H. albomarginata, H. crispula, H. kikutii, H. montana, H. rectifolia, H. undulata and varieties Golden Tiara, Night before Christmas, and Stiletto. It is noted that the reproductive potential and fertility of pollen in 9 species and 3 varieties of host have intraspecific and varietal specificity and are associated with seasonal weather conditions. The results of free pollination of the host were studied. It was found that fruit formation within a single generative shoot is heterogeneous, with the exception of the species H. decorata. The coefficient of productivity of species is 16—93%, varieties 12.5—36.4%. Morphometric indicators of length of generative shoots, fruits and seeds are presented. It is shown that the fruit is a freely opening loculicidal tricuspid capsule. Seeds are linear to oval in shape. It was revealed that with high viability of pollen grains (46—82.6%) in H. albomarginata, H. rectifolia, H. sieboldiana, the productivity coefficient is 2—3.8 times lower than in H. decorata. The flowers are characterized by geitonogamy with the phenomenon of peterandre, chasmogamous pollination and flowering in acropetal direction. H. decorata has a high adaptive advantage of seed productivity. The studied species and varieties consistently pass all the phenophases of development and are characterized by vitality. The growing season from spring growth to fruiting in Novosibirsk is 98—112 days. The reproductive capabilities of the host during introduction in the forest-steppe zone of Western Siberia are realized partly due to seed reproduction and are distinguished by species and variability.

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