Knowledge Center Catalog

Features of wheat grain formation and its quality under drought (Record no. 7092)

MARC details
000 -LEADER
fixed length control field 05739nam a22004217a 4500
001 - CONTROL NUMBER
control field G79739
003 - CONTROL NUMBER IDENTIFIER
control field MX-TxCIM
005 - DATE AND TIME OF LATEST TRANSACTION
control field 20211006081103.0
008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION
fixed length control field 121211s ||||f| 0 p|p||0|| |
040 ## - CATALOGING SOURCE
Original cataloging agency MX-TxCIM
072 #0 - SUBJECT CATEGORY CODE
Subject category code E16
072 #0 - SUBJECT CATEGORY CODE
Subject category code F01
082 04 - DEWEY DECIMAL CLASSIFICATION NUMBER
Classification number 633.1147
Item number BED
100 1# - MAIN ENTRY--PERSONAL NAME
Personal name Abdulbagieva, S.A.
Affiliation International caucasian conference on cereals and food legumes. Abstracts
110 0# - MAIN ENTRY--CORPORATE NAME
Corporate name or jurisdiction name as entry element Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT)
9 (RLIN) 978
111 2# - MAIN ENTRY--MEETING NAME
Location of meeting Tbilisi (Georgia)
Date of meeting 14-17 Jun 2004
245 00 - TITLE STATEMENT
Title Features of wheat grain formation and its quality under drought
260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT)
Place of publication, distribution, etc. Tbilisi (Georgia)
Name of publisher, distributor, etc. CIMMYT :
Date of publication, distribution, etc. 2004
300 ## - PHYSICAL DESCRIPTION
Extent p. 231
340 ## - PHYSICAL MEDIUM
Material base and configuration Printed
520 ## - SUMMARY, ETC.
Summary, etc. Grain yield of cereal crops depends to a large extent on attracting ability of spikes: the more intense it is, the more active is the out- and inf1ow and deposition of reserve substances in grain and the higher is the grain yield per unit area. Such ability of spikes depends on genotype, the growth and development stage, crop management practice and other internal and external factors. A research was carried out to detect those growth and development stages in which the greatest changes of some spike characteristics and total protein content are observed. The studies were carried out at the stages of milk, wax and full maturity, in two variants with optimum irrigation and without irrigation during the whole vegetation period. Four durum and two bread wheat varieties were evaluated. Spike grain weight, thousand grain weight and grain protein content were measured. The study provided evidence that grain formation during the ontogenetic stages proceeds differently in different experimental varieties. Varieties Mirbashir-50 and Guvvali-17 are characterized by higher spike grain weight than other varieties. Although the process of deposition of reserve substances in grain proceeds very fast during the first stages of grain formation, it slows down remarkably by the end of the wax stage. At the wax stage, as compared to that of the milk stage, the grain weight increased for Garagilchin-2 by 0.91 and 0.66g and for Sevinj -by 0.74, and 0.55g in the irrigated and mature stress variants, respectively. These varieties showed a higher increase in the grain weight as compared to other varieties. Garagilchin- 2, Vugar and Mirbashir-50 were found to be top yielders at the stage of full maturity in both variants. The difference in spike grain weight between the wax and full maturity stages made up for Garagilchin- 20. 72g and 0.22g, for Sevinj 0.63g and 0.21 g, and for Vugar 0.98g and 060g in the irrigated and mature stress variants, respectively. It was found that Vugar demonstrated higher increase in spike grain weight compared to other studied varieties. The highest increment in dry biomass accumulation in grain is observed at the wax stage, upon completion of which its intensity decreases. The highest increment in thousand grain weight was demonstrated by varieties Sevinj and Vugar. Noteworthy, that for these varieties the lowest values for the characteristic was recorded at the initial stages of grain formation. Slow growth of grain dry weight at the initial stage of spike formation leaded eventually to the highest values of thousand- grain weight and grain weight per spike at the end of plant development. The chemical composition of wheat grain also changes during the grain development, since the protein-starch ratio in wheat grain changes towards reduction of the protein share, determined through total nitrogen by Kjeldahl (Pleshkov, 1976). In Garagilchin-2, the total nitrogen content at the milk stage in the variant withoptimum irrigation was 2.95%, dropping to 2.44% by full maturity. Such decrease in Sevinj was found to be 0.41 %. Without . irrigation the total nitrogen content for Garagichig-2 and Sevinj were 3.00 and 3.09% respectively. Reduction in total nitrogen content from the milk to the wax maturity stages with and mature stress were found to be about 0.32 and 0.3% for Garagilchin-2, 0.38 and 0.32% for Sevinj, and 0.19 and 0.24% for Vugar, respectively. Between the wax and full maturity stages grain nitrogen content decreased by 0.17 and 0.18% for Garagilchin-2, by 0.03 and 0.03% for Sevinj, and by 0.27 and 0.27% for Vugar in irrigated and mature stress variants, respectively. Comparing total nitrogen content in the milk and full maturity stages, it can be concluded that the highest decrease of total nitrogen is ascertained for Garagi- Ichin-2-0.49 and 0.5%, Vugar-0.46 and 0.51%, and the lowest for Guvvali-17 -0.26 and 0.28%, in irrigated and non-irrigated variants, respectively. Deterioration of water supply was found to influence the protein-starch ratio in wheat grain towards increase of the total protein share as compared to the variant with the optimum irrigation. Thus, the analyzed data ascertains that wheat grain quality changes during the grain filling period and stabilizes only by completion of vegetation period. The quality characteristics are determined already at the beginning of the milk stage, although the ratio of nitrogen versus carbohydrates keeps altering to the completion of the stage of full maturity.
546 ## - LANGUAGE NOTE
Language note English
591 ## - CATALOGING NOTES
Affiliation 0407|AGRIS 0401|AL-Wheat Program
595 ## - COLLECTION
Collection CIMMYT Publications Collection
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
9 (RLIN) 1897
Topical term or geographic name as entry element Biomass
Miscellaneous information AGROVOC
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Cereal crops
650 17 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Crop management
Miscellaneous information AGROVOC
Source of heading or term
9 (RLIN) 1061
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Experimentation
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Protein content
9 (RLIN) 1222
650 17 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Varieties
Miscellaneous information AGROVOC
Source of heading or term
9 (RLIN) 1303
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Wheat
653 0# - INDEX TERM--UNCONTROLLED
Uncontrolled term CIMMYT
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
9 (RLIN) 1313
Topical term or geographic name as entry element Yields
Miscellaneous information AGROVOC
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
9 (RLIN) 1134
Topical term or geographic name as entry element Genotypes
Miscellaneous information AGROVOC
700 1# - ADDED ENTRY--PERSONAL NAME
Personal name Bedoshvili, D.
Relator term ed.
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Koha item type Conference proceedings
Holdings
Date last seen Total Checkouts Full call number Barcode Copy number Price effective from Koha item type Lost status Damaged status Not for loan Collection code Withdrawn status Home library Current library Date acquired
02/10/2015   633.1147 BED A630072 1 02/10/2015 Conference proceedings Not Lost     CIMMYT Publications Collection   CIMMYT Knowledge Center: John Woolston Library CIMMYT Knowledge Center: John Woolston Library 02/10/2015

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