Wyniki wyszukiwania

1

Pollen viability in hybrid swarm populations of Pinus mugo Turra and P. sylvestris L.

100%

Kormutak A., Bohovicova J., Vookova B., Gomory D.

Acta Biologica Cracoviensia. Series Botanica

|

2007

|

tom 49

|

nr 1

61-66

Pollen viability was tested in two hybrid swarm populations of Pinus mugo and P. sylvestris in northern Slovakia and in control populations of the parental species. It was significantly reduced in hybrid populations, as evidenced by average germination percentages ranging from 49.0% and 61.53% and by pollen tube length averaging 74.54-86.47 µm. The corresponding values in the control populations were 78.38-88.5% and 102.92-152.84 µm, respectively. The frequency of microsporogenesis disturbances at the tetrad and mature pollen stages was higher in hybrid swarms than in the control population of P. sylvestris. Based on in vitro germination data, the amount of sterile pollen was estimated at 40-41% in hybrid swarm populations, 12% in P. sylvestris, and 21% in P. mugo.

2

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Evaluation of grapevine resistance to downy and powdery mildew in ‘Regent’ × ‘Bogazkere’ hybrid population segregating for resistance genes

72%

Shidfar M., Akkurt M., Atak A., Ergul A., Soylemezoglu G.

Acta Scientiarum Polonorum. Hortorum Cultus

|

2019

|

tom 18

|

nr 1

Fruit production should be adapted to future scenarios that are frequently associated with scarce resources, especially freshwater and fertilizers. New biologically-based fruit production strategies, i.e. taking into account tree growth and water status, are required to optimize irrigation and fertilization under abiotic stress conditions. It was hypothesized that a moderate abiotic stress, here deficit irrigation with or without nitrogen deficit, in the preharvest period, could decrease postharvest losses due to diseases and pruning weights due to reduced vegetative growth, without sacrificing the yield and fruit quality. This study was conducted over two years using the same trees of ‘Moncante’ nectarine cultivar grown in a commercial orchard. Trees were assigned to three treatments: (1) full irrigation at 80% estimated crop evapotranspiration (ETc), (2) deficit irrigation, i.e. at 75% of full irrigation, and (3) deficit irrigation and deficit nitrogen, i.e. at 75% of full irrigation and 75% of usual N-fertilization adopted by the grower in this commercial orchard. Deficit irrigation alone and in combination with deficit nitrogen reduced postharvest diseases and pruning weights without significant yield losses. Our results suggest that ETc-based approaches of reduced water irrigation may be a sustainable way to decrease phytosanitary inputs and workload in the orchard while maintaining the orchard performance.

3

Current studies on Iberian water frogs

58%

Arano B., Llorente G. A., Herrero P., Sanchiz B.

Zoologica Poloniae

|

1994

|

tom 39

|

nr 3-4

4

Rana esculenta developmental syndrome: fates of abnormal embryos from the first cleavage until spontaneous death

58%

Ogielska M.

Zoologica Poloniae

|

1994

|

tom 39

|

nr 3-4

Ograniczanie wyników

2 Zoologica Poloniae

1 Acta Biologica Cracoviensia. Series Botanica

1 Acta Scientiarum Polonorum. Hortorum Cultus

1 Akkurt M.

1 Arano B.

1 Atak A.

1 Bohovicova J.

1 Ergul A.

1 Gomory D.

1 Herrero P.

1 Kormutak A.

1 Llorente G. A.

1 Ogielska M.

1 Sanchiz B.

1 Shidfar M.

1 Soylemezoglu G.

1 Vookova B.

1 2019

1 2007

2 1994

Pollen viability in hybrid swarm populations of Pinus mugo Turra and P. sylvestris L.

Evaluation of grapevine resistance to downy and powdery mildew in ‘Regent’ × ‘Bogazkere’ hybrid population segregating for resistance genes

Current studies on Iberian water frogs

Rana esculenta developmental syndrome: fates of abnormal embryos from the first cleavage until spontaneous death