Wyniki wyszukiwania - Biblioteka Nauki

1

Interaction of methyl jasmonate and ethephon in gum formation in tulip bulbs

100%

Saniewski M. , Ueda J. , Miyamoto K. , Okubo H. , Puchalski J.

Polish Journal of Natural Sciences. Supplement

|

2003

|

tom 01

2

Influence of Auxin NAA and Ethephon on Yield Quality of Apple (Malus domestica Borkh.) 'Šampion' cv.

86%

Gonkiewicz A. , Leja M.

Ecological Chemistry and Engineering. A

|

2011

|

tom Vol. 18, nr 1

27-33

EN

The experiment was carried at the Experimental Station of Garlica Murowana near Kraków in 2006 and 2008. In 2007 the experiment was not conducted due to frost damages. The objects of the experiment were fourteen-year-old apple trees 'Šampion' cv. on MM.106 rootstock. The aim of the experiment was to evaluate the influence of ethephon (2-chloroethylphosphonic acid) and auxin NAA (naphthalene acetic acid) used in two terms and concentrations on the yield and fruit quality. First treatment was carried out at the end of flowering (80 % the falling petals), second when fruitlets' diameter was 12 mm. Two concentrations: 20 and 60 mg NAA o dm-3, and 200 and 600 mg ethephon o dm-3 were used each time. Controlled trees were not sprayed. After fruit harvest total yield with division into five classes: apple blush, flesh firmness, extract content, acidity and pH were estimated. Experiments showed that used preparations increased the number of fruit with more than 12 cm diameter and decreased the amount of small fruit in total yield. All used combinations increased pH of fruit juice in comparison with control. Used compounds did not show clear influence on fruit juice's extract contents. Used compounds did not have influence on fruit storage ability assessed.

PL

Doświadczenie przeprowadzono w sadzie doświadczalnym w Garlicy Murowanej koło Krakowa w latach 2006 i 2008. W 2007 r. ze względu na uszkodzenia przymrozkowe nie prowadzono badań. Obiektem badań były intensywnie plonujące czternastoletnie drzewa jabłoni odmiany 'śampion' na podkładce 'iMM.106'. Celem doświadczenia była ocena wpływu etefonu oraz auksyny NAA na ilość i jakość plonu. Każdy z preparatów zastosowano w dwóch stężeniach: 200 i 600 mg etefonu o dm-3 oraz 20 i 60 mg NAA o dm-3. Zabiegi wykonano w dwóch terminach: gdy opadło 80 % płatków korony oraz gdy zawiązek z kwiatu królewskiego osiągnął 12 mm średnicy. Drzewa kontrolne nie były opryskiwane. Podczas zbioru oceniano: plon ogólny z podziałem na klasy wielkościowe, powierzchnię jabłek pokrytych rumieńcem, jędrność miąższu, ekstrakt, ogólną kwasowość soku oraz pH. Wszystkie zastosowane zabiegi spowodowały zwiększenie udziału jabłek o średnicy powyżej 7 cm oraz zmniejszenie ilość owoców drobnych w ogólnym plonie. Stwierdzono również dodatni wpływ zastosowanych zabiegów na wzrost kwasowości soku owoców. W doświadczeniu nie stwierdzono wpływu zabiegów na stopień wybarwienia owoców oraz jędrność miąższu, pH oraz ogólną kwasowość ekstraktu soku. Zastosowane preparaty nie miały wpływu na zdolność przechowalniczą owoców.

3

Ethylene evolution intensity and apple fruit setting after thinning with NAA and ethephon

86%

Gonkiewicz A.

Journal of Fruit and Ornamental Plant Research

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2011

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tom 19

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nr 1

EN

The experiment took place in 2006 and 2008. In 2007, the study did not take place due to severe damage to the buds and flowers caused by a spring frost. The subjects of the experiment were 14-year-old 'Sampion' apple trees grafted on the MM 106 rootstock. The auxin NAA, at the concentrations of 20 and 60 mgl-1, and ethephon, at the concentrations of 200 and 600 mg l-1, were used in the experiment. Spraying was carried out at the end of blooming, after 80% of the petals had fallen off the crown. Five days after spraying, the quantity of ethylene evolved from the fruitlets was measured. Large quantities of ethylene evolving were observed after spraying with ethephon, especially when used at 600 mg l-1. Spraying with auxin solutions caused large quantities of ethylene to be observed only during the first year of the study, two days after spraying with the 60 mg l-1 solution of NAA. From the third day after spraying with NAA, ethylene evolution from the fruitlets was observed to be only slightly higher than in the control. During the second year of the study, treatment with NAA caused a slight increase in ethylene evolution only during the first day after treatment. During subsequent days the evolved quantity of ethylene did not differ significantly from the control. In spite of the significant difference in the quantity of the ethylene evolved from the fruitlets, the percentage of the fruitlets was similar after using the agents at the higher concentrations: ethephon at 600 mgl-1 and NAA at 60 mgl-1, as well as at the lower concentrations. The treatments had only a slight influence on the reduction in the total yield. However, they were found to have a favourable influence on fruit size. The results of the study show a higher percentage of fruit with a diameter exceeding 7 cm in the total yield.

PL

Doświadczenie przeprowadzono w latach 2006 i 2008. W 2007 roku nie prowadzono badań z powodu znacznych uszkodzeń pąków i kwiatów przez przymrozki wiosenne. Obiektem badań były 14-letnie drzewa jabłoni 'Szampion' na podkładce MM 106. W doświadczeniu zastosowano auksynę NAA w stężeniu 20 i 60 mgl-1 oraz etefon w stężeniu 200 i 600 mgl-1. Oprysk wykonano pod koniec kwitnienia, gdy opadło 80% płatków korony. Przez pięć dni po zbiegu badano ilo ść etylenu wydzielanego przez zawiązki owocowe. Bardzo duże ilości wydzielanego etylenu zaobserwowano po zabiegu etefonem, szczególnie w st ężeniu 600 mg l-1. Po zabiegu roztworem auksyny dużą ilość etylenu zaobserwowano tylko w pierwszym roku badań dwa dni po zastosowaniu 60 mg.l-1 . Od trzeciego dnia po zabiegu NAA ilość wydzielanego etylenu przez zawiązki owocowe była nieznacznie wyższa niż w kontroli. Auksyna zastosowana w drugim roku badań spowodowała nieznaczny wzrost wydzielanego etylenu tylko w pierwszym dniu badań. W pozostałych dniach ilość wydzielanego etylenu nie ró żniła się statystycznie od kontroli. Pomimo dużych różnic w ilo ści wydzielanego etylenu przez zawiązki owocowe, procent zawiązanych owoców był podobny po zastosowaniu preparatów w wyższych stężeniach: etefonu w stężeniu 600 mg'l"1 i NAA 60 mgl-1, jak również w niższych stężeniach etefonu i NAA. Wykonane zabiegi miały niewielki wpływ na obniżenie wielkości plonu ogólnego. Zaobserwowano jednak bardzo korzystny wpływ na wielkość owoców. Zanotowano większy procentowy udział w plonie ogólnym owoców o średnicy powyżej 7 cm.

4

The effect of flordimex and calcium ions on the metabolism of carotenoids in seedling of Triticale var. Grado

86%

Sykut A.

|

tom 03

|

nr 3-4

5

Influence of ethephon [Flordimex] and calcium chloride on accumulation of calcium fractions and pectinesterase activity in triticale seedlings

86%

Szynal J. , Rogowska A. , Gordon D.

Pestycydy

|

2000

|

nr 3-4

6

Thinning of 'Katja' apple trees with chemicals and manually

86%

Porebski S. , Banach P. , Rzeznicka B.

|

2006

|

tom 14

7

Free amino acid accumulation in different growth stages of hot pepper fruits [Capsicum annuum L.] after ethephon treatments

86%

Perucka I.

|

tom 03

|

nr 5-6

8

Ethephon-induced changes in accumulation of carotenoids in red pepper fruit [Capsicum annuum L.]

86%

Perucka I.

Polish Journal of Food and Nutrition Sciences

|

1996

|

tom 05

|

nr 4

EN

The effect of ethephon applied at seedling on accumulation of earotenoid pigments in fruit of hot pepper Capsicum annuum L. var Bronowicka Ostra was studied. Ethephon was found to stimulate fruit maturation. The mass of ripe fruit from the second and third harvest increased by more than 44% on average compared to controls. Fruit from the third harvest had higher content of red pigment capsanthin (11% on average) and ß-earotene (14%), and ß-cryptoxanthin-provitamin A (18%) than control fruit. The increase in the level of these pigments was accompanied by a decrease in the amount of zeaxanthin and disappearance of neoxanthin. Supposedly ethephon regulates fruit maturation by stimulating carotenogenesis.

PL

Badano wpływ etefonu stosowanego w fazie rozsady na akumulację barwników karotenoidowych w owocach papryki ostrej (Capsicum annuum L.) odmiany Bronowicka Ostra. Stwierdzono, że etefon stymulował dojrzewanie owoców. Masa dojrzałych owoców zebranych w drugim i trzecim terminie zwiększyła się średnio o 44% w porównaniu z owocami roślin kontrolnych (tab.1). Owoce pochodzące z trzeciego zbioru charakteryzowały się ponadto większą zawartością czerwonego barwnika — kapsantyny (średnio o 11%) oraz większą akumulacją β-karotenu (14%) i β-kryptoksantyny — prowitaminy A (18%) niż owoce roślin kontrolnych. Wzrostowi poziomu tych barwników towarzyszył spadek ilości zeaksantyny (17%) i zanik neoksantyny. Należy przypuszczać, że etefon reguluje dojrzewanie owoców przez stymulację procesu karotenogenezy.

9

The effect of simultaneous application of chlorocholine chloride [CCC] and calcium ions on accumulation of pectic substances fraction in the seedlings of winter wheat

86%

Szynal J.

|

tom 03

|

nr 3-4

10

Effect of ethephon and gibberellin A3 on Amaranthus caudatus seed germination and alpha- and beta-amylase activity under salinity stress

72%

Bialecka B. , Kepczynski J.

Acta Biologica Cracoviensia. Series Botanica

|

2009

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tom 51

|

nr 2

119-125

EN

This study assessed the effects of different doses of ethephon and gibberellin A3 on germination and α- and β-amylase activity in Amaranthus caudatus seeds exposed to different levels of salt stress. NaCl at 25 and 50 mM only delayed germination; at 75, 100 and 125 mM it caused 50%, 90% and 99.5% inhibition of Amaranthus caudatus seed germination. Both ethephon and GA3 (0.01, 0.1, 0.3 mM) effectively counteracted inhibition of seed germination under salinity. The stimulatory effect of ethephon appeared earlier, and the seeds were more sensitive to ethephon than to GA3. Ethephon enabled seed germination in the presence of all NaCl concentrations (75, 100, 125 mM) even after 24 h. GA3 alleviated inhibition caused by 75 and 100 mM NaCl until 48 h and did not affect reduction of germination caused by NaCl at 125 mM. NaCl (100 mM) reduced α- and β-amylase activity and seed germination after 14 h, and enhanced α-amylase activity after 20 h, although germination was reduced. Ethephon and GA3 increased α- but not β-amylase activity under salt stress during the first 14 h of incubation

11

Silver thiosulphate counteracts of the inhibitory effect of ethephon on tulip stem elongation induced by auxin

72%

Saniewski M. , Kawa L.

Bulletin of the Polish Academy of Sciences. Biological Sciences

|

1988

|

tom 36

|

nr 10-12

12

Ultrastructural diversity of mitochondria in leaves - a response to stress caused by retardant ethephon

72%

Selga T. , Selga M.

Biological Bulletin of Poznań. Supplement

|

1997

|

tom 34

13

Germination, alpha-, beta-amylase and total dehydrogenase activities of Amaranthus caudatus seeds under water stress in the presence of ethephon or gibberellin A3

58%

Bialecka B. , Kepczynski J.

Acta Biologica Cracoviensia. Series Botanica

|

2010

|

tom 52

|

nr 1

7-12

EN

Amaranthus caudatus L. seed germination was studied under different levels of water deficit induced by PEG 6000 in laboratory conditions. PEG at osmotic potentials -0.2 to -0.3 MPa at 24°C in darkness delayed germination and reduced final germination percentage. PEG solutions at osmotic potential lower than -0.3 MPa almost totally blocked seed germination. Ethephon was much more effective than GA3 in reversing PEG-caused inhibition of A. caudatus seed germination. PEG decreased α-amylase activity after 14 h incubation. It decreased β-amylase activity after 14 and 20 h, and caused an increase in total dehydrogenase activity only after 20 h of incubation. Unlike GA3, ethephon increased α-amylase activity in seeds after 12 and 14 h of incubation under water deficit. After 20 h of incubation there was no difference in α-amylase activity in any of the treatments. Neither ethephon nor GA3 affected the activity of β-amylase and dehydrogenase.

14

Wplyw etefonu na wzrost, rozwoj i plonowanie slonecznika oleistego

58%

Tobola P. , Musnicki C.

Progress in Plant Protection

|

1998

|

tom 38

|

nr 2

655-658

15

Hamowanie elongacji cietych pedow tulipana za pomoca bioregulatorow

58%

Pogroszewska E.

|

nr 2

471-478

PL

Zbadano wpływ fluropirimidolu w stężeniach: 7,5 mg‧dm⁻³, 15 mg‧dm⁻³, 30 mg‧dm⁻³, 60 mg‧dm⁻³, oraz etefonu w stężeniach: 500 mg‧dm⁻³, 1000 mg‧dm⁻³, 2000 mg‧dm⁻³ oraz 4000 mg‧dm⁻³, na elongację pędów i trwałość ciętych kwiatów tulipana ‘Apeldoorn’s Elite’ i ‘Rococo’. Stwierdzono, że wzrost w wazonie pędów odmiany ‘Apeldoorn’s Elite’ skutecznie ogranicza opryskiwanie ich lub 20 godzinne kondycjonowanie po ścięciu w roztworze fluropirimidolu w stężeniu 60 mg‧dm⁻³. Wydłużanie się pędów odmiany ‘Rococo’ najskuteczniej hamuje fluropirimidol w stężeniu 60 mg‧dm⁻³ stosowany w formie 20 godzinnego kondycjonowania przed umieszczeniem kwiatów w wazonie. Kondycjonowanie w roztworze fluropirimidolu o stężeniu 60 mg‧dm⁻³ wykazuje pozytywny wpływ na trwałość ciętych kwiatów ‘Apeldoorn’s Elite’ i ‘Rococo’. Etefon w stężeniu 1000-4000 mg‧dm⁻³, ze względu na uszkadzanie tkanek, nie powinien być stosowany do hamowania wzrostu ciętych tulipanów w wazonie.

EN

The research focused on the effect of flurprimidol at the concentrations of 7,5 mg‧dm⁻³, 15 mg‧dm⁻³, 30 mg‧dm⁻³, 60 mg‧dm⁻³, and ethephon at the concentrations of 500 mg‧dm⁻³, 1000 mg‧dm⁻³, 2000 mg‧dm⁻³, 4000 mg‧dm⁻³, on the shoot elongation and vase life of cut ‘Apeldoorn’s Elite’ and ‘Rococo’ tulips. It was discovered that the growth of cut shoots of ‘Apeldoorn’s Elite’ is limited either by being sprayed or by being conditioned for 20 hours after having been cut in the solution of flurprimidol at the concentration of 60 mg‧dm⁻³. The shoot elongation of ‘Rococo’ is most effectively hindered by flurprimidol at the concentration of 60 mg‧dm⁻³ in the process of 20-hour-conditioning before placing the flowers in a vase. The conditioning in the solution of flurprimidol in the concentration of 60 mg‧dm⁻³ has a positive effect on the vase life of cut ‘Apeldoorn’s Elite’ and ‘Rococo’ tulips. Ethephon at the concentration of 1000-4000 mg‧dm⁻³ should not be used to restrain the growth of cut tulips in a vase because it harms the tissue.

16

Effect of exogenous growth regulators on quality and longevity of cut tulip flowers

58%

Wawrzynczak A. , Goszczynska D. M.

Journal of Fruit and Ornamental Plant Research

|

2000

|

tom 08

|

nr 3-4

17

Frost damages after severe winter 1986-87 of 5 apples tree cultivars previously treated with fruitlet thinning compounds

58%

Guzewski W. , Jaumien F. , Starzynski R.

|

nr 1

18

Hormonal regulation of tomato seed germination at a supraoptimal temperature

58%

Kepczynska E. , Piekna-Grochala J. , Kepczynski J.

Acta Physiologiae Plantarum

|

2006

|

tom 28

|

nr 3

EN

Germination of tomato cv. New Yorker seed is inhibited at 35 °C. This thermoinhibition was partially counteracted by application of GA4+7 alone, the compound applied in combination with ACC or ethephon markedly enhancing the process. The latter compound alone was not able to induce germination at 35 °C. Thermoinhibition of seeds at 35 °C was also counteracted by fluridone, an inhibitor of ABA biosynthesis. At 25 °C, an optimal temperature, ABA inhibited germination of New Yorker seeds. Although another known growth inhibitor MeJA, when applied at an optimal temperature (25 °C), had also a slightly inhibitory effect on germination of those seeds and clearly delayed the process, inhibitors of its biosynthetic pathway (ibuprofen, indoprofen, antypiryne and salicylic acid) did not remove thermoinhibition at 35 °C. An increase in endo-β-mannanase activity after 24 hours of incubation at 35 °C was observed in the seeds incubated in the presence of gibberellins, ACC, ethephon, fluridone used alone and in combinations, but it was not clearly correlated with the effects of these compounds on alleviation of seed germination. However, fluridone present in the same incubation medium at 35 °C with ABA was able to counteract the inhibitory effect of ABA on endo-β-mannanase activity. The results of our study suggest that gibberell ins, ethylene (produced from ACC or ethephon) and ABA, but not jasmonates, regulate tomato seed germination at supraoptimal temperatures. Alleviation of thermoinhibition of New Yorker seed germination by plant growth regulators and fluridone is partially associated with their controlling endo-β-mannanase activity.

19

Inhibitory effect of methyl jasmonate on development of phytopathogen Alternaria alternata [Fr.] Keissl. and its reversal by ethephon and ACC

58%

Kepczynska E. , Kepczynski J.

Acta Physiologiae Plantarum

|

2005

|

tom 27

|

nr 4A

EN

Methyl jasmonate (MeJA) was found to reduce spore germination, hyphal and mycelial growth in Alternaria alternata (Fr.) Keissl. The addition of ethephon or 1-aminocyclopropane-1-carboxylic acid (ACC), ethylene precursor, together with MeJA to the culture medium resulted in a promotion of all developmental stages of the fungus; these compounds partially or completely reversed the inhibition due to MeJA depending on the concentrations applied. MeJA alone had no effect on ethylene production by mycelium, but after 6 days of incubation in the presence of ACC, emanation of this gas increased significantly. Ethylene is involved in reversing the inhibition of A. alternata due to MeJA.

20

Plum fruit thinning with ethephon, paclobutrazol and mixture of NAA, ethephon and carbaryl

58%

Basak A. , Rechnio H. , Ceglowski M. , Guzowska-Batko B.

Journal of Fruit and Ornamental Plant Research

|

1993

|

tom 01

|

nr 2