The influence of temperature on grains germination at Sorghum bicolor L.
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2022-11-25 12:29
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POCHISCANU, Simona-Florina; ROBU, Teodor; DRUŢU, AdinaCătălina; POPA, Diana; TROTUŞ, Elena. The influence of temperature on grains germination at Sorghum bicolor L.. In: Conservation of plant diversity. Ediția 4, 28-30 septembrie 2015, Chișinău. Chișinău: Gradina Botanica (Institut), 2015, p. 91. ISBN 978-9975-3036-8-2.
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Conservation of plant diversity
Ediția 4, 2015
Simpozionul "Conservation of plant diversity"
Chișinău, Moldova, 28-30 septembrie 2015

The influence of temperature on grains germination at Sorghum bicolor L.


Pag. 91-91

Pochiscanu Simona-Florina1, Robu Teodor1, Druţu AdinaCătălina2, Popa Diana2, Trotuş Elena2
 
1 „Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine ,Iaşi,
2 Agricultural Research and Development Station Secuieni
 
Disponibil în IBN: 15 mai 2019


Cuvinte-cheie
grains, germination, sorghum, temperature


Teza

Sorghum bicolor L. has a great development because of its use in the alimentation especially in the semi-arid areas of the world where the climatic conditions give limited conditions for agriculture. Such situations predominate in Africa, Asia and Latin America, which are frequently drought-prone. India grows the largest acreage of sorghum in the world followed by Nigeria and Sudan, and produces the second largest tonnage after the US (FAO, 1995; ICRISAT, 2004; Nadia et al., 2009). Sorghum can be an excellent source of starch, protein, sugar, fiber, being cheaper than corn, because the cost/ha are lower than the corn (Claver et al., 2010; Shinde, 2005; Singh and Sandhu, 2007).   Sorghum is a very demanding species to heat, it prefers at sowing minimum germination temperatures higher than 10ºC. For this reason, at the Agricultural Research – Development Station Secuieni, we have subjected to experiments a number of 16 samples of sorghum with 100 grains each under different temperatures in order to determine the effect of temperature on the germination of Sorghum bicolor L. Following the results, it was observed that, in laboratory conditions, at temperatures ≤ with 10 ºC is obtained a very slow germination and with a huge percentage of grains which do not germinate. Thus, at a temperature of 7 °C, the number of days necessary for seed germination was of 21 days and the percentage of germinated seeds was only of  41.6 %. By increasing the temperature provided at germination until 10 °C, the number of days necessary for germination decreased to 18 days, and the percentage of germinated seeds was increased up to 67.5 %. Once we assured the germination temperatures higher than 14 °C and respectively 18 °C, it was observed an improvement of the seed germination capacity at Sorghum bicolor L. The sorghum grains have germinated in only 9 days and the percentage of germinated seeds was of 81.2 % when it was subjected to temperatures of 14 °C, but at the ensuring of a temperature of 18 °C, the sorghum grains have germinated in 6 days and the percentage of germinated seeds was of 93.5 %.