Wild and Cultivated Sunflower (Helianthus annuus L.) Do Not Differ in Salinity Tolerance When Taking Vigor into Account

• DOI: 10.3390/agronomy10071013
• Publication Date: 2020-07-14T15:03:23Z
• Authors: Vivian H. Tran; Andries A. Temme; Lisa A. Donovan
• Keywords: Helianthus annuus; Drought Tolerance

Cultivated crops are expected to be less stress tolerant than their wild relatives, leading efforts mine relatives for traits increase crop tolerance. However, empirical tests of this expectation often confound tolerance with plant vigor. We assessed whether and cultivated Helianthus annuus L. differed salinity 0 150 mM NaCl treatments. Salinity was as the proportional reduction in biomass deviation from performance based on accessions had a greater decline accessions, but positively associated vigor both. Thus, H. did not differ when variation corrected statistically. For potentially related mechanisms, elemental content allocation N, P, K, Mg, Ca, S, Na, Fe, Mn, B, Cu, Zn some tissues, allocation, specific leaf area, succulence. these were generally unrelated Osmotic adjustment only where more osmotic Our results suggest that use enhance abiotic will benefit knowledge growth responses decoupled vigor, order get beyond potential growth-tolerance trade-offs.