BIO Web Conf.
Volume 43, 2022International Scientific and Practical Conference “VAVILOV READINGS-2021” (VVRD 2021) dedicated to the 101st anniversary of the discovery of the law of homological series and the 134th anniversary of the birth of N. I. Vavilov
|Number of page(s)||9|
|Section||Basic Research in the Field of Plant and Microbial Studies|
|Published online||19 January 2022|
Effect of sterile cytoplasms on content of absolutely dry matter in the grain sorghum hybrids
1 Russian Research, Design and Technology Institute of Sorghum and Maize, 410050, Saratov, 1st Institute passage, 4 (Zonal settlement), Russian Federation
2 Federal Agrarian Research Centre of South-East Region, 410010, Saratov, 7, Tulaikov Street, Russian Federation
* Corresponding author: email@example.com
Analysis of absolutely dry matter (ADM) accumulation is important indicator of productivity of crop plants. For three seasons, we investigated the effect of sterile cytoplasms on content of ADM in the F1 hybrids of grain sorghum obtained on the basis of two series of alloplasmic iso-nuclear CMS-lines: (1) with A3, A4, and 9E cytoplasms and (2) with 9E and M35-1A cytoplasms. For the first time, the effect of the type of sterile cytoplasm on content of ADM in the F1 sorghum hybrids was shown. In each season, A3 cytoplasm reduced ADM in the F1 hybrids at the “tillering – heading” stage, whereas 9E cytoplasm increased ADM at the “heading – complete maturity” stage. The most significant differences were observed under drought conditions. These data indicate the genetic influence of cytoplasm on assimilation capacity of sorghum hybrids and tolerance to drought stress.
© The Authors, published by EDP Sciences, 2022
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