干旱区生态环境知识资源中心(Arid): Screening for Cold Tolerance during Germination within Sweet and Fiber Sorghums [Sorghum bicolor (L.) Moench] for Energy Biomass

Arid

DOI	10.3390/agronomy11040620
	Screening for Cold Tolerance during Germination within Sweet and Fiber Sorghums [Sorghum bicolor (L.) Moench] for Energy Biomass
	Patane, Cristina; Cosentino, Salvatore L.; Cavallaro, Valeria; Saita, Alessandro
通讯作者	Patane, C (corresponding author), CNR Ist BioEcon IBE, Sede Secondaria Catania, Via P Gaifami 18, I-95126 Catania, Italy.
来源期刊	AGRONOMY-BASEL
EISSN	2073-4395
出版年	2021
卷号	11 期号:4
英文摘要	Within the project BIOSEA funded by the Italian Ministry of Agriculture and Forestry, a preliminary laboratory test was conducted to assess the variability for cold tolerance during germination in 30 cultivars of biomass sorghum, among fiber and sweet types. Seed germination (%) and mean germination time (MGT) were examined at seven constant temperatures (from 8 degrees C to 35 degrees C) and base temperature (Tb) and thermal time (theta(T)) for 50% germination were calculated. A wide genetic diversity in the germination response of sorghum was ascertained at 8 degrees C (CV 45%) and 10 degrees C (CV 25.4%). At 8 degrees C, in cultivars of 'Padana 4', 'PR811F', 'PSE24213', 'PR849' and 'Zerberus', seed germination exceeded 80%. Seeds of 'Zerberus' were also the fastest, requiring less than 13 days for final germination at this low temperature. Great differences were found in Tb and theta(T) among cultivars. Tb varied between 7.44 degrees C ('PR811F') and 13.48 degrees C ('Nectar'). Thermal time (theta(T)) was, on average, 24.09 degrees Cd-1, and ranged between 16.62 ('Nectar') and 33.42 degrees Cd-1 ('PSE24213'). The best combination of the two germination parameters (i.e., low Tb and theta(T)) corresponded to 'Zerberus', 'Sucrosorgo 506', 'Jumbo' and 'PR811F'. Accordingly, these cultivars are more tolerant to cold stress during germination and, thus, more adapt to early spring sowings in Mediterranean areas (March-April). Cultivars 'PR811F' (fiber type) and 'Sucrosorgo 506' (sweet type) also combine high cold tolerance with good productivity in terms of final dry biomass, as assessed in open-field conditions (late spring sowing). The genetic variation in the germination response to a low temperature is useful for the identification of genotypes of sorghum suitable to early sowings in semi-arid areas. Selection within existing cultivars for cold tolerance during germination may also contribute to the expansion of biomass sorghum into cooler cultivation areas, such as those of Northern Europe, which are less suitable to this warm season crop.
英文关键词	base temperature germination low temperature Sorghum bicolor thermal time
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000642692400001
WOS类目	Agronomy ; Plant Sciences
WOS研究方向	Agriculture ; Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349402
作者单位	[Patane, Cristina; Cavallaro, Valeria; Saita, Alessandro] CNR Ist BioEcon IBE, Sede Secondaria Catania, Via P Gaifami 18, I-95126 Catania, Italy; [Cosentino, Salvatore L.] Univ Catania, Dipartimento Agr Alimentaz & Ambiente, Via Valdisavoia 5, I-95123 Catania, Italy
推荐引用方式 GB/T 7714	Patane, Cristina,Cosentino, Salvatore L.,Cavallaro, Valeria,et al. Screening for Cold Tolerance during Germination within Sweet and Fiber Sorghums [Sorghum bicolor (L.) Moench] for Energy Biomass[J],2021,11(4).
APA	Patane, Cristina,Cosentino, Salvatore L.,Cavallaro, Valeria,&Saita, Alessandro.(2021).Screening for Cold Tolerance during Germination within Sweet and Fiber Sorghums [Sorghum bicolor (L.) Moench] for Energy Biomass.AGRONOMY-BASEL,11(4).
MLA	Patane, Cristina,et al."Screening for Cold Tolerance during Germination within Sweet and Fiber Sorghums [Sorghum bicolor (L.) Moench] for Energy Biomass".AGRONOMY-BASEL 11.4(2021).