Potential to select wheat genotypes with improved P utilisation characters

Figures & data

Table 1. Bread and durum wheat genotypes with respective seed P concentrations

Number	Genotypes	Definition	Seed P concentration g kg^−1
1	Ankara-98	T. durum	2.70
2	BDME-98/3K	T. aestivum	2.70
3	BDME-98/4S	T. aestivum	2.60
4	BDME-98/5S	T. aestivum	2.50
5	BDMM-98/11S	T. durum	2.60
6	BDME-98/33S-CIT	T. aestivum	2.50
7	BDME-00/1K	T. aestivum	2.35
8	BDME-00/2S	T. aestivum	2.35
9	BDME-00/3S	T. aestivum	2.60
10	BDME-00/4S	T. aestivum	2.90
11	Bezostaya-1	T. aestivum	2.95
12	Dağdaş-94	T. aestivum	2.90
13	Gerek-79	T. aestivum	2.65
14	Gün-91	T. aestivum	2.60
15	Kınacı-97	T. aestivum	3.10
16	Kızıltan-91	T. durum	3.65
17	Kunduru-1149	T. durum	3.40
18	Selçuklu-97	T. durum	3.30
19	Sultan-95	T. aestivum	2.70
20	Yılmaz-98	T. durum	2.80

Table 2. Dry matter yield and agronomic P efficiency parameter of bread and durum wheat genotypes at different P levels

	Dry matter yield, g pot^−1				Agronomic P efficiency, % ^a
Genotypes	P-0	P-40	P-80	Av.	P0/P40	P40/P80
Ankara-98	4.22 ej	4.36 ej	4.26 ej	4.28 BD	96.79	102.35
BDME-98/3K	1.15 n	12.75 a	9.93 b	7.94 A	9.02	128.40
BDME-98/4S	1.22 mn	5.86 cg	8.13 bc	5.07 B	20.82	72.08
BDME-98/5S	1.16 n	5.15 di	6.03 cf	4.11 BD	22.52	85.41
BDMM-98/11S	4.47 ej	4.32 ej	4.58 ej	4.45 BD	103.47	94.32
BDME-98/33S-CIT	1.29 mn	4.92 dj	8.10 bc	4.77 BC	26.22	60.74
BDME-00/1K	1.22 mn	6.13 cf	7.50 cd	4.95 BC	19.90	81.73
BDME-00/2S	1.08 n	4.49 ej	6.11 cf	3.89 BE	24.05	73.49
BDME-00/3S	1.20 mn	3.95 el	6.20 cf	3.78 BE	30.38	63.71
BDME-00/4S	1.45 ln	6.21 cf	6.07 cf	4.58 BC	23.35	102.31
Bezostaya-1	1.00 n	2.52 jn	2.71 in	2.08 F	39.68	92.99
Dağdaş-94	1.61 kn	5.16 di	6.33 cf	4.37 BD	31.20	81.52
Gerek-79	1.05 n	2.46 jn	5.76 ch	3.09 DF	42.68	42.71
Gün-91	1.53 ln	4.97 dj	6.26 cf	4.25 BD	30.78	79.39
Kınacı-97	1.07 n	5.46 dh	6.44 ce	4.32 BD	19.60	84.78
Kızıltan-91	1.23 mn	4.03 ek	5.52 dh	3.59 CE	30.52	73.01
Kunduru-1149	1.16 n	3.73 fm	3.20 hn	2.70 EF	31.01	116.56
Selçuklu-97	4.61 ej	4.47 ej	3.38 gn	4.15 BD	103.13	132.25
Sultan-95	1.14 n	3.73 fm	6.57 ce	3.81 BE	30.56	56.77
Yılmaz-98	4.47 ej	4.44 ej	4.22 ej	4.38 BD	100.68	105.21
Average	1.87 C	4.96 B	5.87 A
F values
Genotypes (G): 11.62**
P treatments (P): 261.40**
G×P: 8.14**
^a Agronomic P efficiency=% value related to the response of a genotype to supplied P level. In P efficient genotype, %P efficiency value is higher, which means that the genotype has lower response or non-response to the supplied P levels.

Table 3. Phosphorus concentration of bread and durum wheat genotypes at different P levels

	P concentration, g kg^−1
Genotypes	P-0	P-40	P-80	Av.
Ankara-98	1.33 nu	1.75 ip	2.50 ae	1.86 AC
BDME-98/3K	1.10 rv	1.92 fm	2.53 ae	1.85 AD
BDME-98/4S	1.15 rv	1.15 rv	2.98 a	1.76 BF
BDME-98/5S	1.17 qv	1.47 mt	2.68 ac	1.77 BF
BDMM-98/11S	1.62 kr	2.37 bf	2.25 bi	2.08 A
BDME-98/33S-CIT	1.10 rv	1.88 fm	2.25 bi	1.74 BF
BDME-00/1K	0.78 uv	1.73 ip	2.68 ac	1.73 BF
BDME-00/2S	0. 97 tv	1.73 ip	2.33 bg	1.68 BH
BDME-00/3S	0. 97 tv	1.82 gn	2.60 ad	1.79 AE
BDME-00/4S	0. 97 tv	2.03 el	2.95 a	1.98 AB
Bezostaya-1	1.17 qv	1.70 jq	2.48 ae	1.78 BF
Dağdaş-94	0.97 tv	1.78 ho	2.32 bh	1.69 BG
Gerek-79	1.15 rv	1.03 sv	2.10 dk	1.43 GH
Gün-91	1.15 rv	1.25 ou	2.23 bj	1.54 DH
Kınacı-97	0.83 uv	1.32 nu	2.72 ab	1.62 CH
Kızıltan-91	0.67 v	1.45 mt	2.02 el	1.38 H
Kunduru-1149	1.02 sv	1.25 ou	2.17 cj	1.48 FH
Selçuklu-97	1.75 ip	1.77 ip	1.23 pu	1.58 CH
Sultan-95	1.05 sv	1.25 ou	2.33 bg	1.54 DH
Yılmaz-98	1.13 rv	1.55 ls	1.83 fn	1.51 EH
Average	1.10 C	1.61 B	2.36 A
F values
Genotypes (G): 6.57**
P treatments (P): 527.94**
G×P: 7.73**

Fig. 1. Polynomial relationships between EI (Efficiency index=dry matter yield²/total P) and dry matter yield of bread and durum wheat genotypes for P-0 (a), P-40 (b) and P-80 (c) levels.

Table 4. Total P content and efficiency index of bread and durum wheat genotypes for different P levels

	Total P content, mg pot^−1				Average efficiency index, EI^a
Genotypes	P-0	P-40	P-80	Av.
Ankara-98	5.66 kt	7.50 io	10.68 fl	7.95 BE	2.46
BDME-98/3K	1.28 rt	24.35 a	25.20 a	16.94 A	3.87
BDME-98/4S	1.41 rt	6.75 js	24.15 a	10.77 B	2.96
BDME-98/5S	1.35 rt	7.43 io	15.67 bg	8.15 BE	2.29
BDMM-98/11S	7.22 ip	10.24 gm	10.24 gm	9.23 BC	2.21
BDME-98/33S-CIT	1.43 rt	9.28 hn	18.22 bc	9.64 BC	2.46
BDME-00/1K	0.95 t	10.72 fl	20.19 ab	10.62 B	2.62
BDME-00/2S	1.04 st	7.77 io	14.14 ch	7.65 BE	2.12
BDME-00/3S	1.16 rt	7.37 ip	16.10 bf	8.21 BE	1.92
BDME-00/4S	1.40 rt	12.72 di	17.78 bd	10.63 B	2.20
Bezostaya-1	1.17 rt	4.29 nt	6.78 js	4.08 G	1.14
Dağdaş-94	1.57 qt	9.36 hn	14.69 ch	8.54 BD	2.41
Gerek-79	1.20 rt	2.48 ot	12.07 ej	5.25 EG	2.04
Gün-91	1.76 pt	6.21 kt	13.85 ch	7.27 CF	2.71
Kınacı-97	0.89 t	7.17 iq	17.38 be	8.48 BD	2.61
Kızıltan-91	0.80 t	5.87 kt	11.14 fk	5.94 DG	2.47
Kunduru-1149	1.17 rt	4.72 mt	6.86 jr	4.25 FG	1.86
Selçuklu-97	8.03 io	7.91io	4.42 nt	6.78 CG	2.59
Sultan-95	1.19 rt	4.86 mt	15.30 bg	7.12 CG	2.26
Yılmaz-98	5.07 lt	6.88 jr	7.73 io	6.56 CG	2.80
Average	2.29 C	8.20 B	14.13 A
F values
Genotypes (G): 14.79**
P treatments (P): 433.14**
G×P: 9.96**
^a Efficiency index (EI)=dry matter yield^2/total P content, and serves to select wheat genotypes with improved P utilization characters as ER (efficient-responsive), ENR (efficient non-responsive), IR (inefficient responsive) and INR (inefficient non-responsive).

Fig. 2. Classification of bread and durum wheat genotypes according to the EI (efficiency index at the P-0 level) and the maximum dry matter (at the 40 or 80 mg kg⁻¹ P levels). ER; efficient-responsive, ENR: efficient non-responsive, IR: inefficient responsive, INR: inefficient non-responsive.