View Full Table | Close Full ViewTable 1.

Seedling phenotypic responses to plant density stress.

 
Height (cm) Stem width (cm) Number of tillers
Genotype Low† High Low High Low High
Barley
Baronesse 31.9‡ 33.8** 0.24 0.21*** 1.3 0.2***
Harrington 38.6 35.6*** 0.26 0.20*** 1.8 0.3***
Morex 33.6 35.8*** 0.27 0.20*** 1.0 0.2***
Steptoe 37.4 40.3*** 0.30 0.21*** 1.3 0.2***
Maize
B73 20.4 18.7* 0.23 0.20* NA
HP301 14.1 15.1 0.11 0.12 NA
Mo17 12.2 13.2 0.21 0.20 NA
OH43 11.5 13.7* 0.24 0.23 NA
P39 14.2 18.0* 0.16 0.19* NA
*Significance value using unpaired t test of low versus high plant density at the 0.05 probability level.
**Significance value using unpaired t test of low versus high plant density at the 0.01 probability level.
***Significance value using unpaired t test of low versus high plant density at the 0.001 probability level.
Plant population: The barley experiment was planted at 3 (low) and 21 (high) plants per pot. The maize experiment was planted at 2 (low) and 18 (high) plants per pot.
Data correspond to average of three biological replications. Phenotypic measurements were taken 14 d after germination for barley and 12 d after planting for maize.



View Full Table | Close Full ViewTable 2.

Number of transcripts exhibiting differential accumulation between genotypes.

 
High density Low density High and low density
Genotype vs. genotype FC† t test‡ FC t test FC t test
Barley
Baronesse Harrington 446 375 403 326 394 382
Baronesse Morex 715 623 609 522 605 597
Baronesse Steptoe 628 499 567 477 515 503
Harrington Morex 904 795 1890 1870 697 671
Harrington Steptoe 686 532 718 647 648 614
Morex Steptoe 852 685 657 535 616 599
Maize
B73 Hp301 1595 1402 1504 1378 1476 1451
B73 Mo17 1339 1157 1366 1192 1312 1276
B73 Oh43 1603 1484 1865 1716 1695 1678
B73 P39 1483 1361 1671 1671 1504 1485
Hp301 Mo17 1606 1433 1601 1354 1568 1524
Hp301 Oh43 1655 1517 1832 1690 1699 1665
Hp301 P39 1550 1412 1552 1423 1505 1489
Mo17 Oh43 1551 1391 1761 1542 1623 1580
Mo17 P39 1480 1293 1578 1370 1489 1452
Oh43 P39 1458 1367 1463 1368 1408 1402
FC, fold change: number of probe sets with a greater than or equal to twofold change.
Number of probe sets with a greater than or equal to twofold change and an unpaired t test (p < 0.05).