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Relationships between high-molecular-weight glutenin subunit （HMW-GS）, pentosan and various component contents in different wheat varieties

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Journal of Life Sciences 2007年第1期1卷 22-29,33页

作者： LI Chun-xi ZHANG Bei-bei SHAO Yun JIANG Li-na LI Dan-dan College of Life Sciences Henan Normal University Xinxiang 453007 China

The composition of HMW-GS and pentosan and its various component contents in different wheat varieties were analyzed. According to scores of these subunits in several wheat varieties, the correlation relationship between the composition of HMW-GS, subunit combination types and pentosan, various components and component ratio were ascertained. The results showed that HMW-GSs were very diverse which had 11 types. In different varieties, the variation of Ara was obvious while Xyl was not; pentosan and its various component contents were very different, and their coefficient of variability was quite high. The majority of parameters had a significant negative correlation with Glu-1 where Glu-D1 was stronger than other two loci. N, 7, 17＋18 and 2＋12 subunits had influence on pentosan and its various component contents. But some subunits such as 1 and 5＋ 10 which are good for baking quality had little contribution to pentosan and various component contents. The pentosan and various component contents were higher in the varieties which had （N, 7, 2＋12） subunit combinations. Additionally, the 21 varieties were classified into 4 categories according to HMW-GS scores and pentosan content.

关键词： wheat HMW-GS pentosan correlation classification

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Variation of chemical characteristics and pulpability of dhaincha(Sesbania bispinosa)on location

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Journal of Bioresources and Bioproducts 2017年第1期2卷 24-29页

作者： Mamon Sarkar Shrikanta Sutradhar AKM Golam Sarwar M.Nashir Uddin Sontosh C.Chanda M.Sarwar Jahan Pulp and Paper Research Division BCSIR LaboratoriesDhakaDr.Qudrat-i-Khuda RoadDhaka 1205Bangladesh Laboratory of Plant Systematics Department of Crop BotanyBangladesh Agricultural UniversityMymensingh 2202Bangladesh

Dhaincha(Sesbania bispinosa(Jacq.)Wight)is a crop generally cultivated for improving soil *** to the lack of forest worldwide,alternative source of raw materials for cellulose industries is the main concern *** this investigation,dhaincha samples of 21 accessions were collected from different districts of Bangladesh in order to study the variation of chemical characteristics and its *** lignin,pentosan andα-cellulose content were varied from 21 to 23%,16 to 18%and 38 to 43%,*** highest and lowestα-cellulose contents were found in two location of Mymensingh *** was no correlation was found among the ***,pulping of dhaincha from selected seven districts was carried out in kraft process at the conditions of 18%active alkali at 170℃ for 2 *** the pulping properties did not show any mentionable distinction for place *** pulp yield is 42.9%with kappa number *** highest brightness 85%was reached with D_(0)E_(p)D_(1)*** papermaking properties were very close to the conventional raw materials used in ***,dhaincha can be used as a raw material for pulp production in Bangladesh.

关键词： Dhaincha Accession number α-cellulose Lignin pentosan Pulp yield Brightness

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