Sensitivity to salinity at the emergence and seedling stages of barnyardgrass (EchinochloQ crus-gQlli), weedy rice (OryzQ sQtivQ), and rice with different tolerances to ALS-inhibiting herbicides Author Fogliatto, Silvia Postdoc Fellow, Dipartimento di Scienze Agrarie, Forestali e Alimentari, Università degli Studi di Torino, Grugliasco, Author Patrucco, Lorenzo Postgraduate Fellow, Dipartimento di Scienze Agrarie, Forestali e Alimentari, Università degli Studi di Author Milan, Marco Postdoc Fellow, Dipartimento di Scienze Agrarie, Forestali e Alimentari, Università degli Studi di Torino, Grugliasco, Author Vidotto, Francesco Associate Professor, Dipartimento di Scienze Agrarie, Forestali e Alimentari, text Weed Science 2021 Cambridge, England 2020-10-12 69 1 39 51 http://dx.doi.org/10.1017/wsc.2020.72 journal article 298657 10.1017/wsc.2020.72 f11a544c-edfb-4ceb-8f04-b1cee3d7a0ad 1550-2759 11553267

Table 3. Chlorophyll a, chlorophyll b, chlorophyll a / b ratio, and carotenoid content of the different Echinochloa crus-galli populations and the percentage difference of these values for each salt concentration compared with the control.a

	NaCl		Chl a difference compared with		Chl b difference compared	Chl a / b			Carotenoid difference compared
aAbbreviations: Chl, chlorophyll; SW, shoot fresh weight. bLowercase letters refer to the comparison of the E. crus-galli chlorophyll a, chlorophyll b, chlorophyll a / b ratio, and carotenoid content for the NaCl concentrations within the same population. cThe E. crus-galli chlorophyll a, chlorophyll b, and carotenoid content variations among populations are indicated in lowercase letters in italics, lowercase letters in bold, and uppercase letters for 50, 100,and 150 mM concentrations, respectively.Different letters indicate significantly different values according to Tukey’ s honest significant difference test. Where no letters are present, the comparison was not significant.
Population	concentration	Chl a b	the controlc	Chl b b	with the controlc	ratiob	Carotenoidb		with the controlc
	mM	mgg−1 SW	%	mgg−1 SW	%		mgg−1 SW		%
s1	0	0.92 a	—	0.41 a	—	3.59 d	0.15	a	—
	50	1.32 c	42.96 e	0.89 c	114.99 d	1.49 b	0.23	c	54.57 e
	100	1.31 b	41.29 e	1.01 d	144.69 e	1.29 a	0.21	b	42.99 e
	150	1.33 d	44.27 D	0.57 b	37.22 B	2.36 c	0.34	d	129.56 C
s2	0	1.25 a	—	0.47 a	—	2.65 c	0.31	b	—
	50	1.33 c	6.54 c	0.91 d	91.78 c	1.68 b	0.27	a	−12.16 c
	100	1.32 b	5.79 c	0.84 c	77.75 c	1.57 a	0.28	a	−10.60 c
	150	1.39 d	11.33 B	0.82 b	73.87 D	1.60 a	0.34	c	9.44 A
s3	0	1.29 a	—	1.17 c	—	1.11 a	0.19	a	—
	50	1.33 c	2.67 b	0.92 b	−21.30 a	1.45 b	0.25	b	32.76 d
	100	1.32 b	2.09 b	0.92 b	−21.05 a	1.47 b	0.25	b	35.65 d
	150	1.36 d	5.33 A	0.69 a	−40.69 A	1.97 c	0.34	c	82.64 B
r1	0	1.14 a	—	0.63 a	—	2.13 d	0.28	c	—
	50	1.32 c	15.77 d	0.95 b	50.90 b	1.39 b	0.23	b	−19.53 b
	100	1.28 b	12.88 d	1.30 c	106.34 d	0.98 a	0.14	a	−51.47 b
	150	1.38 d	21.33 C	0.95 b	50.98 C	1.44 c	0.31	d	−8.92 A
r2	0	1.31 c	—	0.70 a	—	1.88 c	0.33	c	—
	50	1.26 a	−3.46 a	1.49 c	113.51 d	0.85 a	0.06	a	−80.39 a
	100	1.30 b	−0.41 a	1.14 b	63.01 b	1.15 b	0.20	b	−39.36 a
	150	—	—	—	—	—	—		—