Project Title:

Near-isoline Gene for Tillering in Spring Wheat 

Objective:

To test agronomic performance of gene pairs of spring wheat genetic lines with tillering traits.

Personnel:

J.A. Torrion, Daniel Porter, Jason Cook

Summary: 

Six tiller near-isoline gene pairs were studied to examine the performance of genes with high tiller compared with the no tiller gene check. This study was in a randomized complete block with three replications. The six gene pairs were planted at lower and higher seeding rates (16 and 24 live seeds/ft2). Detailed management is provided in Table 1. There were no yield differences among the genetic lines regardless of seeding rates (Table 2). The plant height of entry 19 and 20 are the tallest, whereas entry 2 is the shortest regardless of seeding rates. Protein ranged 13.6% (entry 16 at 16 seeding rate) to 15.5% (entry 19 at 24 seeding rate). Both entries 1 and 2 had low test weights compared with the rest of the entries. Entries 19 and 20, showed the largest seed size, as shown in the thousand kernel weights. Falling number quality analysis were above the market critical levels and ranging from 407 (entry 16 at 16 seeding rate) to 483 (entry 2 at 16 seeding rate).

Table 1. Management Information 

Seeding date: April 21st, 2022 Field Location: R6
Julian date: 111 Harvest date: 8/29/2022
Seeding rate: 24 seeds/ft2 & 16 seeds/ft2 Julian date: 241
Previous crop: Alfalfa Soil type: fine sandy loam
Herbicide: Axial Bold, CleansweepM (6/1/2022) Tillage: conventional
Insecticide:   Soil residual nutrient (NO3-, P, K lb/A): 78-6-122
Fungicide:   Nutrient fertilizer applied (N, P2O5, K20 lb/A): 80-50-60-10s (4/6/2022)

 

Table 2. Agronomic Performance

Entry   Parent Material   Seed No./ft2   YLD1 bu/ac   MC %  HT, in  PRO2 %   TWT1, lb/bu   TKW, g   FN, sec 
1 Reeder/Choteau 24 82.4 11.7 31.8 14.3 55.5 33.2 471
1 Reeder/Choteau 16 78.8 11.6 31.3 14.1 55.6 33.2 437
2 Reeder/Choteau 24 83.3 11.7 30.7 13.8 56.2 33.6 461
2 Reeder/Choteau 16 80.9 11.6 30.7 14.1 55.7 33.1 483
15 McNeal/Vida 24 81.7 12.1 38.4 13.7 60.4 34.1 411
15 McNeal/Vida 16 82.7 12.1 38.8 14.1 60.1 33.7 430
16 McNeal/Vida 24 79.9 12.1 39.1 14.0 59.6 32.6 433
16 McNeal/Vida 16 80.9 12.1 37.5 13.6 59.8 32.8 407
19 Reeder/Hank 24 76.2 12.0 46.2 15.5 60.6 42.9 446
19 Reeder/Hank 16 74.1 12.0 46.2 15.4 60.6 42.9 456
20 Reeder/Hank 24 77.3 12.0 46.7 15.1 61.3 40.2 461
20 Reeder/Hank 16 73.7 12.0 46.3 15.4 61.4 40.3 478
    Mean 79.3 11.9 38.6 14.4 58.9 36.0 447.9
    CV 5.9 0.9 3.4 3.0 1.0 4.0 5.8
    LSD ns 0.1 1.9 0.6 1.0 2.1 37.4
    PR > F 0.0618 0.0001 0.0001 0.0001 0.0001 0.0001 0.0019

TRT: treatment, YLD: yield, HT: plant height inches, PRO: protein, MC: moisture content, TWT: test weight, TKW: thousand kernel weight, FN: falling numbers

1 adjusted to 13% moisture

2 adjusted to 12% moisture