Open AccessRelationship of barley leaf’s pigment content with development of yield structure elements
Author(s) -
I. Zaytseva,
E.N. Noskova,
Eugene M. Lisitsyn,
I N Schennikova
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/677/4/042051
Subject(s) - carotenoid , chlorophyll , pigment , hordeum vulgare , photosynthesis , chlorophyll a , botany , chlorophyll b , photosynthetic pigment , biology , horticulture , chemistry , poaceae , organic chemistry
Variation in contents of chlorophyll and carotenoid pigments and their correlation links with elements of yield structure of 17 samples of spring barley ( Hordeum vulgare L.) was estimated by method of spectrophotometric analysis of acetone extracts from flag and second leaves. The variability of chlorophyll a content was 13.3%, of chlorophyll b – 13.5%, and carotenoids – 14.4% for flag leaf, and respectively 11.6%; 10.8%; 11.2% - for second leaf. Practically there was no variation in distribution of pigments between light-harvesting complexes (LHC) and reaction centers (RC) of photosystems (the average value of a part of chlorophyll in a light-harvesting complex was 81% of its total amount at a variation of 2.8%). The flag leaf pigments’ content was not correlated with final productivity of barley plants (r ≤ 0.27) whereas for a second leaf it is revealed statistically significant (at p ≤ 0.05) interrelation between productivity and content of chlorophyll a ( r = 0.64), chlorophyll b ( r = 0.58), and carotenoids (r = 0.60). It is disclosed that in the studied set of spring barley samples, one can predict extent of the level of the next parameters: “ear length”, “grain mass per ear” and “1000-grains mass” by the pigments content in a flag leaf; and the parameters “ear length” and productivity – by its content in a second leaf. Among three analyzed photosynthetic pigments, yellow pigments (carotenoids) render the greatest influence on the level of development of separate elements of yield structure. Content of pigments in a second leaf is more suitable index for assessment of potential productivity of spring barley cultivars. Breeding work on increase of carotenoids and/or chlorophyll b contents in a second leaf is perspective.