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Sustainable acoustic insulation for prefabricated concrete homes in Andean zones

100%

Paredes M., Lopez F., Castillo T., Andrade A., Arroba V.

Przegląd Naukowy. Inżynieria i Kształtowanie Środowiska

2021

tom 30

nr 3[93]

Differential effect of short-term cold stress on growth, anatomy, and hormone levels in cold-sensitive versus -resistant cultivars of Dagitaria eriantha

72%

Garbero M., Andrade A., Reinoso H., Fernandez B., Cuesta C., Granada V., Escudero C., Abdala G., Pedranzani H.

Acta Physiologiae Plantarum

2012

tom 34

nr 6

Two cultivars of Digitaria eriantha (cold-sensitive cv. Sudafricana and cold-resistant cv. Mejorada INTA) were exposed to cold stress (5 °C) for 0, 6, 24, or 72 h, and compared in terms of leaf and root growth, recovery period, shoot and leaf anatomy, and levels of chlorophyll, auxin (indole-3-acetic acid, IAA) and cytokinins (CKs). In Sudafricana, cold treatment caused reduced growth, slight changes in chlorophyll level, reduced levels of IAA and CK iso-pentenyladenine (iP), and reduced leaf dry weight (DW) and fresh weight (FW) during the recovery period. Anatomical damage was observed in chloroplasts, main stem, and axillary buds. Ultrastructural study showed reduced numbers of starch grains in chloroplasts of the bundle sheath and mesophyll. In Mejorada, cold treatment had no significant effect on growth or chlorophyll level. Leaf DW and FW quickly returned to normal levels during the recovery period. Anatomy of ground meristem was affected, but ultrastructure of bundle sheath and mesophyll chloroplasts was not. The cold tolerance of cv. Mejorada appears to be related to the stability of chlorophyll and CK levels, increase of IAA, and maintenance of normal shoot and leaf anatomy and ultrastructure.

Ograniczanie wyników

1 Acta Physiologiae Plantarum

1 Przegląd Naukowy. Inżynieria i Kształtowanie Środowiska

2 Andrade A.

1 Abdala G.

1 Arroba V.

1 Castillo T.

1 Cuesta C.

1 Escudero C.

1 Fernandez B.

1 Garbero M.

1 Granada V.

1 Lopez F.

1 Paredes M.

1 Pedranzani H.

1 Reinoso H.

1 2021

1 2012

Wyniki wyszukiwania

Sustainable acoustic insulation for prefabricated concrete homes in Andean zones

Differential effect of short-term cold stress on growth, anatomy, and hormone levels in cold-sensitive versus -resistant cultivars of Dagitaria eriantha