Table 3. Mean values of the ILHs for important agronomic traits and extent of heterosis (%) over parents check hybrids and recurrent parents in 17 hybrids.
Traits | Parameters | ILHs | ||||||||||||||||
ILH 299∧ a | ILH 326∧ | ILH 411∧ | ILH 435∧ | ILH 867∼ | ILH 873∼ | ILH 894∼ | ILH 896∼ | ILH 900∼ | ILH 901∼ | ILH 921∼ | ILH 924∼ | ILH 929∼ | ILH 951∼ | ILH 1011∼ | ILH 1459∼ | ILH 1433∼ | ||
Panicle length (cm) | Mean of test hybrid | 27.4 | 27.8 | 26.3 | 25.8 | 26. | 27.6 | 24.8 | 25.5 | 25.3 | 26.9 | 29.4 | 25.2 | 25.0 | 27.7 | 27.6 | 25.3 | 23.7 |
Heterosis over IL | 7.8 ** | 17.6 ** | 2.9 | 9.7 ** | 4.3 | 6.5 * | 3.5 | 1.6 | 3.4 | 7.63 ** | 23.8 ** | 2.5 | 1.6 | 10.1 ** | 10.3 ** | 11.8 ** | −10.9** | |
Heterosis over PMS17B | 17.1 ** | 18.9 ** | 12.5 ** | 10.3 ** | 10.9 ** | 16.2 ** | 4.5 | 7.5 * | 6.8 * | 13.6 ** | 23.8 ** | 6.31 * | 5.53 | 16.9 ** | 16.4 ** | 6.5 * | −0.1 | |
Heterosis over CH 1or CH2 | 9.3 ** | 11.0 ** | 5.0 * | 2.9 | 5.6 * | 10.8 ** | −0.3 | 2.4 | 1.7 | 8.0 ** | 17.9 ** | 1.3 | 0.5 | 11.4 ** | 10.9 ** | 1.5 | −4.8 | |
Heterosis over recurrent parent | 9.9 ** | 11.7 ** | 5.6 * | 3.6 | 7.7 ** | 12.9 ** | 1.5 | 4.3 | 3.6 | 10.0 ** | 20.2 ** | 3.2 | 2.4 | 13.5 ** | 13.0 ** | 3.4 | −3.0 | |
Grains per panicle | Mean of test hybrid | 175.3 | 173.4 | 130.0 | 157.2 | 172.6 | 140.5 | 150.0 | 123.9 | 124.7 | 168.2 | 180.0 | 115.2 | 114.7 | 181.4 | 158.0 | 157.0 | 138.8 |
Heterosis over IL | 40.3 ** | 38.8 ** | 2.4 | 18.2 ** | 16.0 ** | 7.3 | −3.7 | −6.4 | −1.1 | 28.5 ** | 37.7 ** | −7.3 | −16.0** | 33.2 ** | 22.8 ** | 19.5 ** | 3.1 | |
Heterosis over PMS17B | 17.2 ** | 15.9 ** | −13.0** | 5.0 | 9.0 | −11.2* | −5.2 | −21.7** | −21.1** | 6.2 | 13.7 ** | −27.2** | −27.5** | 14.5 ** | −0.1 | −0.8 | −12.2* | |
Heterosis over CH 1or CH2 | 35.6 ** | 34.1 ** | 0.6 | 21.6 ** | 16.8 ** | −4.8 | 1.5 | −16.0** | −15.5** | 13.9 ** | 21.9 ** | −22.0** | −22.3** | 22.8 ** | 7.0 | 6.3 | −5.9 | |
Heterosis over recurrent parent | 38.6 ** | 37.1 ** | 2.8 | 24.3 ** | 20.9 ** | −1.5 | 5.1 | −13.1* | −12.5* | 17.8 ** | 26.1 ** | −19.2** | −19.5** | 27.0 ** | 10.7 * | 10.0 | −2.7 | |
Spikelet fertility (%) | Mean of test hybrid | 84.4 | 83.2 | 64.5 | 71.8 | 78.2 | 66.9 | 72.5 | 63.5 | 62.3 | 75.5 | 80.3 | 56.4 | 59.1 | 85.4 | 74.9 | 73.8 | 57.6 |
Heterosis over IL | 2.5 | 13.2 * | −9.5 | −9.6* | −4.4 | −25.8** | −18.8** | −26.8** | −20.9** | −13.5** | 10.4 ** | −33.9** | −27.7** | −2.2 | −7.1* | 5.9 | −31.4** | |
Heterosis over PMS17B | 17.3 ** | 15.7 ** | −10.2* | −0.1 | 7.5 * | −8.0* | −0.3 | −12.6** | −14.3** | 3.7 | 10.3 ** | −22.4** | −18.6** | 17.4 ** | 3.0 | 1.4 | −20.7** | |
Heterosis over CH 1or CH2 | 7.9 | 6.4 | −17.3** | −8.1 | 8.4 * | −7.2* | 0.4 | −11.9** | −13.6** | 4.6 | 11.3 ** | −21.7** | −17.9** | 18.4 ** | 3.9 | 2.3 | −20.5** | |
Heterosis over recurrent parent | 1.9 | 0.4 | −22.0** | −13.2** | −14.2** | −26.6** | −20.5** | −30.3** | −31.6** | −17.2** | −11.9** | −38.0** | −35.1** | −6.29* | −17.8** | −19.0** | −36.5** | |
1000 grain weight (g) | Mean of test hybrid | 25.5 | 24.9 | 27.1 | 25.0 | 26.3 | 25.0 | 24.9 | 26.4 | 26.9 | 26.1 | 24.7 | 27.1 | 25.4 | 28.3 | 25.1 | 23.9 | 24.8 |
Heterosis over IL | 17.5 ** | 7.17 * | 9.3 ** | 6.8 * | 7.2 ** | 6.8 * | 6.3 * | −1.8 | −0.1 | 0.9 | 8.4 ** | −4.7 | 1.6 | 12.4 ** | −0.2 | 1.9 | −4.5 | |
Heterosis over PMS17B | 15.1 ** | 12.3 ** | 22.2 ** | 12.8 ** | 17.5 ** | 11.9 ** | 11.4 ** | 17.8 ** | 20.1 ** | 16.6 ** | 10.5 ** | 20.9 ** | 13.5 ** | 26.5 ** | 12.1 ** | 6.7 * | 10.9 ** | |
Heterosis over CH 1or CH2 | 9.4 ** | 6.8 * | 16.1 ** | 7.2* | 9.2 ** | 3.9 | 3.5 | 9.4 ** | 11.6 ** | 8.3 ** | 2.6 | 12.3 ** | 5.4 | 17.5 ** | 4.1 | −0.8 | 3.1 | |
Heterosis over recurrent parent | 5.2 | 2.6 | 11.6 ** | 3.1 | −0.8 | −5.6* | −6.0* | −0.6 | 1.3 | −1.6 | −6.8* | 1.9 | −4.3 | 6.7 * | −5.4* | −9.9** | −6.4* | |
Grain yield (t/ha) | Mean of test hybrid | 8.99 | 8.76 | 6.13 | 5.75 | 9.59 | 7.15 | 7.84 | 7.27 | 6.11 | 9.42 | 9.64 | 5.59 | 6.43 | 9.82 | 8.85 | 8.21 | 5.53 |
Heterosis over IL | 30.3 ** | 74.3 ** | −5.3 | −11.0 | 23.6 * | −10.2 | −6.4 | −19.1 * | −34.5** | 7.8 | 26.4 ** | −36.7** | −19.4* | 51.6 ** | 5.6 | 24.4 * | −33.1** | |
Heterosis over PMS17B | 18.7 * | 15.6 * | −19.0* | −24.0** | 15.6 | −13.8 | −5.4 | −12.3 | −26.2** | 13.6 | 16.3 | −32.6** | −22.4* | 18.4 * | 6.6 | −1.0 | −33.2** | |
Heterosis over CH 1or CH2 | 33.3 ** | 29.8 ** | −9.1 | −14.7 | 39.6 ** | 4.0 | 14.1 | 5.7 | −11.0 | 37.1 ** | 40.3 ** | −18.6 | −6.3 | 43.0 ** | 28.7 ** | 19.4 | −19.4 | |
Heterosis over recurrent parent | 12.1 | 9.2 | −23.5** | −28.2** | 19.9 * | −10.6 | −1.9 | −9.1 | −23.5** | 17.8 * | 20.5 * | −30.1** | −19.5* | 22.8 * | 10.6 | 2.6 | −30.7** |
*, **significant at P≤0.05 and P≤0.01, respectively.
CH1 = PMS17A/Pusa44; CH2 = PMS17A/PR114;
∧ILH developed from Pusa44 derived IL.
ILH developed from PR114 derived IL;
details of the hybrids are presented in table 1.