Abstract
In the first part of this study, topcross hybrids (TCHs) of pearl millet [Pennisetum glaucum (L.) R. Sr.] based on landrace pollinator showed a clear advantage in stability of grain and stover yields, compared to their pollinator, in arid zone environments. In this part of study, TCHs were evaluated for additional traits viz., downy mildew resistance, terminal drought tolerance, individual yield components and potential productivity in order to identify male-sterile (A) lines that would enhance the performance of TCHs in comparison to that of their landrace topcross pollinator (TCP). Downy mildew incidence in TCHs ranged from 0% to 60%: several A-lines (841 A, ICMA 88004, ICMA 91333, ICMA 92666, ICMA 94111, ICMA 97333 and RMS 3A) produced hybrids resistant to all three downy mildew pathotypes. Many A-lines produced TCHs which had positive drought response index (DRI) and hybrids based on sixteen of the A-lines tested were significantly better than their pollinator in their ability to set and fill grain under stress conditions at Patancheru. None of the A-lines produced TCH with significantly better tillering than ERajPop, but ten of the TCHs had tillering at par with TCP. The majority of hybrids were significantly superior to their TCP for grain size, but this advantage was offset by significantly lower grain number panicle−1 in two-thirds of the TCHs. Eight of the TCHs had significantly greater growth rates, and consequently greater biomass, grain and/or stover yields than the TCP under high input conditions designed to assess potential productivity. Fertility restoration was adequate for the TCH of all A-lines except ICMA 90111 and ICMA 95333. Thus there are a number of opportunities to retain, in the TCH, favourable traits in the TCP and to improve less favourable ones as required.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 11
Claim · model-written summary
Several A lines produced hybrids resistant to all three downy mildew pathotypes.
- Taxon
- pearl millet
Cenchrus americanust0 - Material
- 841 A, ICMA 88004, ICMA 91333, ICMA 92666, ICMA 94111, ICMA 97333 and RMS 3Ae0
- Interactor
- downy mildewPeronosporaceaee0pathogen
- Outcome
- resistant to all three downy mildew pathotypese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“several A-lines (841 A, ICMA 88004, ICMA 91333, ICMA 92666, ICMA 94111, ICMA 97333 and RMS 3A) produced hybrids resistant to all three downy mildew pathotypes.”
t0“pearl millet”
Claim · model-written summary
Downy mildew incidence in topcross hybrids ranged from 0% to 60%.
- Taxon
- pearl milletCenchrus americanust0
- Interactor
- downy mildewPeronosporaceaee0pathogen
- Outcome
- Downy mildew incidencee0
- Value
- 0% to 60%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Downy mildew incidence in TCHs ranged from 0% to 60%”
t0“pearl millet”
Claim · model-written summary
Many A lines produced hybrids with positive drought response index.
- Taxon
- pearl milletCenchrus americanust0
- Outcome
- positive drought response index (DRI)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Many A-lines produced TCHs which had positive drought response index (DRI)”
t0“pearl millet”
Claim · model-written summary
Hybrids from sixteen A lines set and filled grain under stress better than their pollinator at Patancheru.
- Taxon
- pearl milletCenchrus americanust0
- Outcome
- ability to set and fill graine0
- Direction
- bettere0
- Comparator
- their pollinatore0
- Setting
- Patancherue0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hybrids based on sixteen of the A-lines tested were significantly better than their pollinator in their ability to set and fill grain under stress conditions at Patancheru.”
t0“pearl millet”
Claim · model-written summary
No A line hybrid tillered significantly better than ERajPop.
- Taxon
- pearl milletCenchrus americanust0
- Outcome
- tilleringe0
- Direction
- Nonee0
- Comparator
- ERajPope0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“None of the A-lines produced TCH with significantly better tillering than ERajPop”
t0“pearl millet”
Claim · model-written summary
Ten topcross hybrids had tillering on par with their topcross pollinator.
- Taxon
- pearl milletCenchrus americanust0
- Outcome
- tilleringe0
- Direction
- at pare0
- Comparator
- TCPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ten of the TCHs had tillering at par with TCP.”
t0“pearl millet”
Claim · model-written summary
Most hybrids had larger grain than their topcross pollinator.
- Taxon
- pearl milletCenchrus americanust0
- Outcome
- grain sizee0
- Direction
- superiore0
- Comparator
- their TCPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The majority of hybrids were significantly superior to their TCP for grain size”
t0“pearl millet”
Claim · model-written summary
Two thirds of topcross hybrids had lower grain number per panicle.
- Taxon
- pearl milletCenchrus americanust0
- Outcome
- grain number panicle−1e0
- Direction
- lowere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significantly lower grain number panicle−1 in two-thirds of the TCHs”
t0“pearl millet”
Claim · model-written summary
Eight topcross hybrids had greater growth rates than the pollinator under high inputs.
- Taxon
- pearl milletCenchrus americanust0
- Outcome
- growth ratese0
- Direction
- greatere0
- Comparator
- TCPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Eight of the TCHs had significantly greater growth rates, and consequently greater biomass, grain and/or stover yields than the TCP under high input conditions”
t0“pearl millet”
Claim · model-written summary
Eight topcross hybrids also had greater biomass and grain or stover yield than the pollinator under high inputs.
- Taxon
- pearl milletCenchrus americanust0
- Outcome
- biomass, grain and/or stover yieldse0
- Direction
- greatere0
- Comparator
- TCPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Eight of the TCHs had significantly greater growth rates, and consequently greater biomass, grain and/or stover yields than the TCP under high input conditions”
t0“pearl millet”
Claim · model-written summary
Fertility restoration was adequate except for ICMA 90111 and ICMA 95333 hybrids.
- Taxon
- pearl milletCenchrus americanust0
- Outcome
- Fertility restoration was adequatee0
- Qualifier
- except ICMA 90111 and ICMA 95333e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertility restoration was adequate for the TCH of all A-lines except ICMA 90111 and ICMA 95333.”
t0“pearl millet”