Wyniki wyszukiwania

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Identification and characterization of a cDNA clone for heat tolerance in Brassica oleracea var. capitata

100%

Annamalai P., Yanagihara S., Yashima S.

Biological Bulletin of Poznań. Supplement

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1997

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tom 34

2

Are Slovak wheat landraces more tolerant to drought compared with present genotypes?

80%

Olsovska K., Zivcak M., Brestic M., Repkova J., Pivkova J.

Acta Physiologiae Plantarum

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2007

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tom 29

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nr 1 Suppl.

3

Cultivar variation in heat stability and kinetic properties of soluble invertase in wheat grains

80%

Asthir B., Kaur A., Basra A. S.

Acta Physiologiae Plantarum

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1998

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tom 20

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nr 4

Soluble invertase from mid-milky stage grains of two wheat (Triticum aestivum L.) varieties, namely Kalyansona and PBW 343 was isolated and purified by employing ammonium sulphate precipitation, gel filtration on Sephadex G-150 and DEAE-cellulose column chromatography. Invertase from Kalyansona exhibited greater heat stability (50 °C) compared to PBW 343 (35 °C). By employing photo-oxidation and chemical modification methods, and by studying the effect of pH on Km and Vmax, the involvement of histidine, sulphydryl and α-carboxyl groups in the active site of the enzyme was indicated. The enzyme was completely inhibited by HgCl₂ and DTNB. ZnSO₄, MgSO₄, KCl, CaCl₂, EDTA and pyridoxine were strong inhibitors in PBW 343 but not in Kalyansona. The two varieties also showed differential response in respect to thermodynamic properties of the enzyme, i.e. energy of activation (Ea), enthalpy change (ΔH) and entropy change (ΔS). Overall the results suggest that genetic differences exist in soluble invertase properties of wheat grains and that the thermal adaptation of the enzyme is reflected in its altered kinetic behaviour.

4

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Indices and their applicability under high temperature in potato (Solanum tuberosum L.) cultivars

61%

Paul S., Gogoi N.

International Letters of Natural Sciences

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2015

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tom 43

The increasing temperature is going to be more vulnerable for cool season crops like potato which requires an optimum productivity temperature of 18 to 20 °C. Thus, breeding for heat tolerance has become very important. Therefore, some previously used indices for abiotic stress tolerance have been used in our study for screening of high temperature stress tolerance in potato. Three high yielding (Kufri jyoti, Kufri megha and Kufri pokraj) and two local (Rangpuria and Badami) commonly grown potato cultivars were selected for our experiment. Potato cultivars were sown under normal condition and two high temperature conditions (polyhouse and early season) and indices such as HSI (heat susceptibility index), HTI (heat tolerance index), GM (geometric mean) and HII (heat intensity index) were used to evaluate the performance of the cultivars under all the three temperature conditions. The positive and significant correlation between HTI (heat tolerance index), and GM (geometric mean) as well as with tuber yield under all the conditions revealed that these indices were efficient in selecting the high temperature tolerant potato cultivars. We recorded the equal applicability of these two indices for both high yielding and local group of potato cultivars. Our study revealed that cultivar Kufri megha and Rangpuria showed higher heat tolerance between high yielding and local cultivars respectively.

Ograniczanie wyników

2 Acta Physiologiae Plantarum

1 Biological Bulletin of Poznań. Supplement

1 International Letters of Natural Sciences

1 Annamalai P.

1 Asthir B.

1 Basra A. S.

1 Brestic M.

1 Gogoi N.

1 Kaur A.

1 Olsovska K.

1 Paul S.

1 Pivkova J.

1 Repkova J.

1 Yanagihara S.

1 Yashima S.

1 Zivcak M.

1 2015

1 2007

1 1998

1 1997

Identification and characterization of a cDNA clone for heat tolerance in Brassica oleracea var. capitata

Are Slovak wheat landraces more tolerant to drought compared with present genotypes?

Cultivar variation in heat stability and kinetic properties of soluble invertase in wheat grains

Indices and their applicability under high temperature in potato (Solanum tuberosum L.) cultivars