Chromosome endoreduplication as a factor of salt adaptation in Sorghum bicolor

PROTOPLASMA ◽  
2006 ◽  
Vol 227 (2-4) ◽  
pp. 113-118 ◽  
Author(s):  
M. Ceccarelli ◽  
E. Santantonio ◽  
F. Marmottini ◽  
G. N. Amzallag ◽  
P. G. Cionini
Keyword(s):  
Sorghum Bicolor ◽  
Salt Adaptation ◽  
Chromosome Endoreduplication

INDUCED MODIFICATIONS IN REPRODUCTIVE TRAITS OF SALT-TREATED PLANTS OF SORGHUM BICOLOR

1998 ◽  
Vol 46 (1) ◽  
pp. 1-8 ◽  
Author(s):  
G.Nissim Amzallag
Keyword(s):  
Sorghum Bicolor ◽  
Phenotypic Variability ◽  
Reproductive Traits ◽  
Dry Weight ◽  
Salt Adaptation ◽  
Early Exposure ◽  
Stem Height ◽  
Shoot Dry Weight ◽  
Adaptation Response ◽  
Reproductive Characters

Plants of Sorghum bicolor were grown hydroponically in a solution containing 150 mM NaCl, and the reproductive characters were analyzed at the end of the life cycle. A subpopulation was exposed to salinity on day 8 following germination (early-exposed plants), and another subpopulation was first exposed to salinity on day 21 following germination (late-exposed plants). Fertility and stem height, as determined per g shoot dry weight (DW), were similar for control and late-exposed plants. However, these parameters were largely modified in early-exposed plants. The population of late-exposed plants displayed an increase in phenotypic variability. However, the monomodal structure of the population remained similar to that of the population of control plants. In contrast, a large increase in diversity was observed in the population of early-exposed plants, and the frequency distribution of the reproductive characters appeared as plurimodal for this population. Early exposure to NaCl has been previously shown to induce an increase in salinity tolerance of the plant (termed salt adaptation). This effect was not observed for late-exposed plants. The significance of the induced modifications in reproductive characters is discussed in the light of the salt adaptation response in Sorghum.

Adaptive determinism during salt-adaptation in Sorghum bicolor

Biosystems ◽  
1995 ◽  
Vol 36 (1) ◽  
pp. 71-77 ◽  
Author(s):  
H. Seligmann ◽  
G.N. Amzallag
Keyword(s):  
Sorghum Bicolor ◽  
Salt Adaptation

Characterization and expression of dehydrins in water-stressed Sorghum bicolor

1997 ◽  
Vol 99 (1) ◽  
pp. 144-152 ◽  
Author(s):  
Andrew J. Wood ◽  
Peter B. Goldsbrough
Keyword(s):  
Sorghum Bicolor

Consórcio palma-sorgo sob lâminas de irrigação: balanço de água no solo e coeficientes da cultura

Agrometeoros ◽  
2020 ◽  
Vol 27 (2) ◽  
Author(s):  
Cleber Pereira Alves ◽  
Thieres George Freire Silva ◽  
Hygor Kristoph Muniz Nunes Alves ◽  
Alexandre Maniçoba da Rosa Ferraz Jardim ◽  
Luciana Sandra Bastos de Souza ◽  
...  
Keyword(s):  
Sorghum Bicolor ◽  
Sorghum Bicolor L

Objetivou-se neste estudo quantificar a evapotranspiração real (ETr) e máxima da cultura (ETc) e os coeficientes da cultura (Kc) do consórcio palma-sorgo. O experimento foi conduzido no município de Serra Talhada, PE. O delineamento usado foi em blocos ao acaso, envolvendo cinco lâminas de irrigação (0, 25, 50, 75 e 100% da evapotranspiração de referência - ETo), sob sistema de cultivo consorciado palma-sorgo. O clone de palma forrageira utilizado foi a Orelha de Elefante Mexicana (Opuntia stricta (Haw.) Haw.) e o cultivar de sorgo, Sorghum bicolor (L.) Moench, a SF 15. O sorgo foi conduzido durante dois ciclos (planta e rebrota) compreendidos em um ciclo anual da palma. A quantificação da ETr e da ETc foi realizada através do resíduo do balanço de água no solo (BAS) a cada 14 dias, com a mensuração dos componentes hidrodinâmicos. As determinações da ETc e do Kc foram realizadas com base na lâmina de 75% da ETo. Os componentes do BAS foram submetidos à análise de regressão, sendo testados modelos polinomiais. Com exceção da variação do armazenamento de água no solo, os demais componentes hidrodinâmicos do solo cultivado sob sistema consorciado palma-sorgo respondem linearmente ao aumento de lâminas de irrigação. A evapotranspiração média diária do consórcio palma-sorgo é igual a 3,0 mm dia-1, independentemente da lâmina de irrigação. Os coeficientes do consórcio palma-sorgo são iguais a 0,40, 0,68, 0,90 e 0,52 durante as fases I, II, III e IV de emissão de cladódios.

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