CHARACTERISTICS OF PEA SPECIMENS OF THE CHAMELEON MORPHOTYPE IN TERMS OF RELATIVE DROUGHT TOLERANCE
2021
Soboleva, G.V. | Zelenov, A.A. | Sobolev, A.N.
The article presents results of screening of pea samples of chameleon morphotype: Spartak, Yaguar, Orel, Sibirskii-1, TM-06-457, Yag -06-643, Х2-12-90, Amikh-99-1132, k-8835 Wisconsin-9406 for a number of indicators of plant resistance to drought. Control is the Sophia variety. The assessment of resistance at the early stages of ontogenesis was carried out on nutrient media containing 15% PEG as a stress factor. Resistance indicators were: relative level of resistance (seed germination under conditions of simulated physiological drought in% to control), length of the embryonic root. To assess the resistance to dehydration of whole plants, the indicators of the water regime were analyzed: water retention capacity during wilting and the total water content in tissues. The level of relative stability varied from 49,12% (k-8835 Wisconsin-9406) to 91,56% (TM-06-457). The most resistant to osmotic stress were samples: ТМ-06-457 (91,56%) and Х2-12-90 (84,51%). The group of medium-resistant varieties included two varieties: Spartak (65,00%) and Orel (66,12%). A close positive correlation (r = 0.82) was established between seed germination and the length of the embryonic root on media with a high osmotic load. Advantage of pea samples of chameleon morphotype in comparison with the control in terms of water-holding capacity of whole plants was revealed
Show more [+] Less [-]AGROVOC Keywords
Bibliographic information
This bibliographic record has been provided by Federal Scientific Center of Legumes and Groat Crops