Earliness is a critical agronomic trait that enables plants to avoid adverse weather conditions during the late growing season or at harvest.In wheat, earliness is controlled by at least three 730 sunken lake road distinct mechanisms: vernalization requirement, photoperiod sensitivity, and a mechanism independent of the first two, so called, earliness per se.In this work we report a locus on chromosome 3B within NLP3-B1 (TraesCS3B02G190300) gene, coding a nitrate-sensitive transcription factor protein, which is associated with earliness in F5:6 of PI-518620 x CI-17241 spring wheat cross.The variant ‘A’ of the single nucleotide polymorphism NLP3-B1: c.1824+137G>A, which is proper to evolutionary earlier haplotypes, provides heading and anthesis that is 2 days earlier.
The effect of this novel marker on earliness was additive to the effect of PPD-D1 locus in the same population; however, the effect of the former was weaker.Similarly, allele Ppd-D1a and the variant ‘A’ of the NLP3-B1: c.1824+137G>A polymorphism statistically significantly reduced the plant height (for 2.2 and 1.3 cm, correspondingly) and changed some other agronomical traits; however, these light pleiotropic effects are not of practical value.
The possible iphone 14 price arizona direct impact of NLP3-B1 on the timing of flowering via altered nitrate sensitivity has been discussed, and other candidate genes on chromosome 3B have also been suggested.