盐碱地不同基因型甜高粱的能源品质形成规律及其评价

为了探明盐碱地不同甜高粱(Sorghum saccharatum)品种能源品质形成规律,并筛选出适宜该地生长且能源品质较高的甜高粱品种,本研究通过田间试验,利用相关的农艺性状和生理指标,对龟裂碱土条件下生长的5个不同基因型甜高粱的能源品质进行综合评价。结果表明,龟裂碱土条件下,不同基因型甜高粱茎秆中的可溶性糖含量及糖产量随生育进程推进呈增加趋势,其中开花后前20d是甜高粱糖分大量积累的时期。ZNH18和ZNH07可溶性糖含量及糖产量均较高,其次为ZNH12,ZNH05和CT-2较低;不同基因型甜高粱茎秆纤维素和半纤维素含量和产量随生育进程推进呈下降趋势,木质素含量和产量呈增加趋势,但各时期ZNH18和ZNH07的木质纤维素各组分含量均呈现出一定优势。此外,在龟裂碱土条件下,ZNH18和ZNH07能够获得较高的生物产量和籽粒产量。因此,甜高粱ZNH18和ZNH07能够较好地适应龟裂碱土环境,其糖产量、纤维产量和生物产量均较高,是适于该环境种植的优良基因型。

Evaluation of the regularity of energy formation of sweet sorghum in saline-alkali soils

To determine the quality of sweet sorghum energy in saline-alkali soil,and to select the appropriate growth for the area and higher quality energy varieties,a field test was conducted to evaluate the agronomic traits and physiological indexes of sweet sorghum related to the comprehensive evaluation of five different genotypes of sweet sorghum grown in cracking alkali soil.The results showed that under the condition of cracking alkali soil,soluble sugar content and sugar yield of stems of different varieties of sweet sorghum increased with growth,during which the accumulation of large amounts of sugar occurred during the first 20 days after flowering.Soluble sugar content and sugar yield were higher in ZNH18 and ZNH07,followed by ZNH12,and were lowest in ZNH05 and CT-2.Stalk cellulose and hemicellulose content and yield in the genotypes of sweet sorghum decreased with growth.Lignin and yield showed an increasing trend;however,Ligno cellulose content of each component showed some advantages in ZNH18 and ZNH07.In addition,in cracking alkali soil,ZNH18 and ZNH07 could obtain higher grain and biological yield.Therefore,sweet sorghum ZNH18 and ZNH07 could better adapt to cracking alkali soil,with higher sugar,biological,and fibre yield.As such,these are excellent genotypes that are suitable for planting in this environment.