+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Tannin concentration and quality changes in sorghum sorghum bicolor as affected by maturity and sorghum type

Crop Science 26(2): 372-375
Tannin concentration and quality changes in sorghum sorghum bicolor as affected by maturity and sorghum type
Speculation has arisen over the feeding value of silages produced from bird-resistant (high tannin) sorghums [Sorghum bicolor (L.) Moench]. The objectives of this study were to determine the effects of maturity on tannin content in the grain and whole plants of bird-resistant and bird-susceptible grain and forage sorghums, and to determine the relationship between tannin content and other quality attributes such as crude protein (CP), acid-detergent fiber (ADF), neutral-detergent fiber (NDF), and in vitro dry matter digestibility (IVDMD). Four hybrids of each sorghum type were grown in the field, and entire plants were harvested at boot and hard-dough stages of maturity. Grain was harvested at milk, hard-dough, and mature stages. Significant differences (P < 0.05) were measured in grain tannin level among the three sorghum types. Tannin levels were highest in grain of bird-resistant hybrids, with forage-type sorghums being intermediate, and bird-susceptible entries lowest. Significant reductions (P < 0.05) in tannin level occurred in grain of bird-resistant hybrids as the grain matured, but increased significantly with maturity in the whole plant. Changes in whole-plant tannin levels over the season were inconsistent in both bird-susceptible and forage-type sorghums. Crude protein was significantly higher (P < 0.05) in grain at the milk stage than at hard-dough for all hybrids. Significant reductions in CP were observed in all hybrids as the plant matured from boot to hard-dough. Fibrous constituents, ADF and NDF, decreased and IVDMD increased significantly (P < 0.05) as plants matured. Whole-plant tannin level was negatively correlated with CP and IVDMD, and positively related to fibrous constituents. Results of this study indicate that feeding value of the silage of bird-resistant sorghum hybrids would be reduced by high concentration of tannin at the hard-dough stage of maturity.

(PDF 0-2 workdays service: $29.90)

Accession: 006578298

Related references

Tannin concentration and quality changes in sorghum as affected by maturity and sorghum type. Crop Science 26(2): 372-375, 1986

Yield and quality changes with maturity of silage type sorghum sorghum bicolor fodder. Agronomy Journal 73(6): 988-990, 1981

Sorghum sorghum bicolor tannin content during maturity under different environmental conditions. Japanese Journal of Crop Science 51(2): 178-184, 1982

Effect of the concentration of wood ash extract and duration of soaking on the chemical composition of high tannin sorghum (Sorghum bicolor) cultivars. Journal of Food Technology 2(4): 304-307, 2004

Changes in composition of sudan grass m and forage sorghum m with maturity sorghum sudansense m sorghum bicolor m. Agronomy Journal 60(5): 459-463, 1968

Relationship of tannin level in sorghum to stage of maturity, sorghum type, ensiling and digestibility. Forage systems leading US agriculture into the future: 231-234, 1984

Effect of maturity stage and fertilizer on yield and grain quality of sorghum (Sorghum bicolor). Indian Journal of Agronomy 38(4): 562-568, 1993

Quality traits in forage sorghum sorghum bicolor harvested at early head emergence and at physiological maturity. Crop Science 23(3): 594-596, 1983

Use of whole grain and refined flour from tannin and non-tannin sorghum (Sorghum bicolor (L.) Moench) varieties in frybread. Food Science and Technology International 20(5): 333-339, 2014

I. Diallel cross analysis of stomatal density and leaf-blade area in grain sorghum, Sorghum bicolor (L.) Moench. II. Biochemical characterization of six trisomics of grain sorghum, Sorghum bicolor (L.). Dissertation Abstracts International, B 38(2): 507B-508B, 1977