Wyniki wyszukiwania

1

Rooting pattern of primary and secondary roots in air and mound layered pecans

100%

Sharma S. D., Rosanglura S.

Fruit Science Reports

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1987

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tom 14

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nr 3

2

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The effect of cultivar on the growth and relations between growth characters in “knip-boom” apple trees

86%

Lipecki J., Szot I., Lipa T.

Acta Scientiarum Polonorum. Hortorum Cultus

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2014

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tom 13

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nr 6

The measurements have been performed in the nursery in the years 2007–2013 to study differences in size and correlations between selected growth factors in “knipboom” trees of 6 apple cultivars on M.9 rootstock. The trees of ‘Jonagold Decosta’ (‘Red Jonaprince’ in 2013) and ‘Fuji Beni Shogun’ showed the strongest growth, ‘Šampion’ and ‘Camspur’ the weakest one, whereas ‘Gala Must’ and ‘Golden Delicious Reinders’ were characterized by moderate vigor. Mean length of one feather increased from the tree top towards its base, but did not depend significantly on the number of laterals per tree. Correlations between growth factors were similar to those found in maiden apple trees and the closest ones were between total length of lateral shoots and their number on the tree. A trunk diameter had stronger correlations with other growth parameters than tree height.

3

Growth characteristics of Fusarium spp. causing wilt disease in Psidium guajava L. in India

72%

Gupta V. K., Misra A. K., Gaur R. K.

Journal of Plant Protection Research

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2010

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tom 50

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nr 4

Fusarium oxysporum f. sp. psidii and F. solani, causal agents of wilt in guava are highly variable pathogens. This study was conducted on cultural and physiological (temperature and pH) characters. The data revealed that maximum mycelial growth was obtained in potato dextrose agar as semi-solid media i.e. 78.00 mm for F. oxysporum f. sp. psidii; 73. 83 mm for F. solani, while malt extract broth as liquid broth media i.e. 1 385 mg mycelia for F. oxysporum f. sp. psidii; 1491 mg for F. solani. Maximum sporulation was recorded in oatmeal agar and mycological broth. The optimum temperature and pH for growth of both Fusarium spp. isolates was 28°C and 5.5. The isolates differed in their colony growth; mycelial mass, macro-conidia, and micro-conidia produced. These variations were characters of each of the isolates with respect to cultural and physiological characters.

4

The ecological amplitude of Acorus calamus young shoots under water level gradient

72%

Cao Y., Guo Z., Yang Y., Wang G., Xie Z.

Polish Journal of Ecology

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2015

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tom 63

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nr 4

This paper analysed the influence of the gradient of water levels (-54–120 cm) on Acorus calamus (A. calamus) young shoots in terms of their growth characteristics (germination rate, basal stem, height and biomass), leaf characteristics (number, area and moisture content), chlorophyll (chl) fluorescence parameters (Fv/ Fm, ETR, qP and qN) and other indicators. Based on a Gaussian model, we determined and quantified the response relationship between A. calamus young shoots and water level. The results showed that the ecological amplitude of water level for A. calamus young shoots was -52.3−141.8 cm, and the optimum range was -3.5−69.3 cm; a variety of indicators suggested that the optimum depth for A. calamus young shoots was from18.8 cm to 49.6 cm. The A. calamus seedling growth characteristics which were sensitive to changes in the water level were the germination rate and biomass. The germination rate was more sensitive to the submergence water depth, but the biomass was obviously influenced by the groundwater depth. Therefore, the A. calamus could be a suitable species for ecological restoration of land/inland water ecotones in lakes, rivers and reservoirs.

5

Growth characteristics of ornamental Judas tree (Cercis siliquastrum L.) seedlings under different concentrations of lead and cadmium in irrigation water

58%

Hatamian M., Nejad R., Kafi M., Souri M. K., Shahbazi K.

Acta Scientiarum Polonorum. Hortorum Cultus

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2019

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tom 18

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nr 2

Landscape plantations are significantly water demanding in many parts of the world, particularly in dry regions. Adequate water supply is the main limiting factor behind landscape development, maintenance and beauty in such environments. On the other hand, monitoring the growth response of ornamental and landscape plants to irrigation water containing heavy metals can be useful in management and application of municipal wastewaters to these plantations instead of application in edible vegetable crops production, which is common in many urban areas. In the present study, one year old seedlings of Judas tree (Cercis siliquastrum) were irrigated for two years with water containing 0, 15 or 30 mg L–1 of lead (Pb) in absence or presence of cadmium (0 or 5 mg L–1) in a factorial design, and under greenhouse conditions. Heavy metal treatments had no significant effect on leaf SPAD value; however, plants treated with Pb15Cd0 combination had significantly higher SPAD value than Pb30Cd5 combination that showed the lowest leaf SPAD value. Increasing the lead and cadmium levels of irrigation water increased the number of chlorotic and necrotic leaves of plant than control, whereas it reduced the average leaf area and new shoot growth. The control plants or plants treated with lower level of heavy metals showed the highest leaf area and new shoot growth. Leaf photosynthesis rate was significantly reduced in all heavy metal treated plants than control plants, as the lowest amount was in Pb30Cd5 combination treatment. All heavy metal treatments showed higher leaf soluble carbohydrates and proline content than in control plants. Leaf soluble carbohydrates were highest in Pb30Cd0 and Pb30Cd5 treatments, and leaf proline was highest in Pb30Cd5 and Pb15Cd5 treatments. The results indicate that Judas tree is a relatively tolerant species to high concentrations of Pb and Cd in root medium added through the irrigation water, and long term dual application of these heavy metals can have additive harmful effects on plant growth.

6

Growth characteristics of Ephelota gigantea: a pest to seaweed culture along the Northeastern coast of Japan

58%

Kobayashi T., Nakano N., Muto T., Endo Y.

Acta Protozoologica

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2011

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tom 50

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nr 4

7

Resistance to black root rot (Chalara elegans Nag. Raj and Kendrick) and some growth characteristics in doubled haploid derivatives of the F1 hybrid of tobacco (Nicotiana tabacum L.)

58%

Trojak-Goluch A., Berbec A.

Polish Journal of Agronomy

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2009

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nr 01

8

Growth characteristics and reproduction of comber, Serranus cabrilla (Actinopterygii, Perciformes, Serranidae), in the Aegean Sea

58%

Ilhan D., Akalin S., Tosunoglu Z., Ozaydin O.

Acta Ichthyologica et Piscatoria

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2010

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tom 40

|

nr 1

Background. Even though Serranus cabrilla has been a by-catch species in trawling operations, it is now becoming an economically important fish species on the Turkish Coast of Aegean Sea, because of its low market price. For an efficient fisheries management of the stocks it is important to know important biological parameters of the commercially exploited species. Therefore the aim of this study was to obtain necessary growth- and reproductive characteristics of comber representing the local population of this fish in the study area. Materials and Methods. Biological aspects of comber were examined based on a total of 1452 specimens collected from the Aegean Sea, during the period January 2005–December 2005. Age of fish was determined by otolith reading. Length–weight relation and the von Bertalanffy equation were used to evaluate the fish growth. Results. Annuli on otoliths indicated the presence of 6 age classes. The computed growth parameters were: L∞= 23.88 cm; k = 0.298 year–1 and t0= –1.577 year. The length–weight relations were calculated as:W= 0.0111 · L2.998 for sex combined. The growth performance index (Φ′) was 2.230. The fish mature sexually for the first time at a total length of 13.20 cm (L50). The spawning season of comber was from March to May, with a peak in April. Conclusion. The comber grows rapidly attaining almost 75% of its linear growth during the first two years of life and then the growth slows down. The growth coefficient, (k), indicates slow attainment of maximum size because of significantly correlated to temperature of sea water, leading to a considerable variability in the life span between areas.

Ograniczanie wyników

Rooting pattern of primary and secondary roots in air and mound layered pecans

The effect of cultivar on the growth and relations between growth characters in “knip-boom” apple trees

Growth characteristics of Fusarium spp. causing wilt disease in Psidium guajava L. in India

The ecological amplitude of Acorus calamus young shoots under water level gradient

Growth characteristics of ornamental Judas tree (Cercis siliquastrum L.) seedlings under different concentrations of lead and cadmium in irrigation water

Growth characteristics of Ephelota gigantea: a pest to seaweed culture along the Northeastern coast of Japan

Resistance to black root rot (Chalara elegans Nag. Raj and Kendrick) and some growth characteristics in doubled haploid derivatives of the F1 hybrid of tobacco (Nicotiana tabacum L.)

Growth characteristics and reproduction of comber, Serranus cabrilla (Actinopterygii, Perciformes, Serranidae), in the Aegean Sea