Abstract
Abstract Acceptance of shrunken-2 ( sh2 ) sweet corn ( Zea mays L.) hybrids is limited by poor seed quality and seedling emergence, especially in cold soils. The conductivity of the electrolytes leached from imbibing seeds, a rapid measurement of seed quality, is highly correlated with field emergence among sweet corn hybrids. Our objective was to determine if conductivity is related to field emergence in a sh2 population that had undergone selection for improved field emergence for 10 cycles. The response of conductivity to indirect selection was linear, and the linear trend accounted for a large portion of the variation in conductivity ( r 2 = 0.70). Conductivity ranged from 82.0 dS·m –1 in cycle 0 to 35.3 dS·m –1 in cycle 8, with cycle 10 not differing from cycle 8. High conductivity indicates greater electrolyte leakage. At P ≤ 0.01, conductivity was negatively correlated with all seed performance ratings; field emergence ( r = –0.82), plant height ( r = –0.81), uniformity ( r = –0.92), and relative emergence ( r = –0.85).
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Claims 8
Claim · model-written summary
Conductivity responded linearly to selection for improved field emergence, with the trend explaining r² = 0.70 of its variation.
Not reportedTaxon
Verbatim
e0“The response of conductivity to indirect selection was linear, and the linear trend accounted for a large portion of the variation in conductivity ( r 2 = 0.70).”
Claim · model-written summary
Seed-leachate conductivity fell from 82.0 dS·m –1 at cycle 0 to 35.3 dS·m –1 at cycle 8.
- Material
- cycle 8e0
- Outcome
- Conductivitye0
- Direction
- ranged frome0
- Value
- 35.3 dS·m –1e0
- Qualifier
- 82.0 dS·m –1 in cycle 0e0
Not reportedTaxon
Verbatim
e0“Conductivity ranged from 82.0 dS·m –1 in cycle 0 to 35.3 dS·m –1 in cycle 8”
Claim · model-written summary
Cycle 10 conductivity did not differ from cycle 8 conductivity.
Not reportedTaxon
Verbatim
e0“cycle 10 not differing from cycle 8.”
Claim · model-written summary
Higher conductivity indicated greater electrolyte leakage.
Not reportedTaxon
Verbatim
e0“High conductivity indicates greater electrolyte leakage.”
Claim · model-written summary
Conductivity was negatively correlated with field emergence at r = –0.82.
Not reportedTaxon
Verbatim
e0“At P ≤ 0.01, conductivity was negatively correlated with all seed performance ratings; field emergence ( r = –0.82)”
Claim · model-written summary
Conductivity was negatively correlated with plant height at r = –0.81.
Not reportedTaxon
Verbatim
e0“At P ≤ 0.01, conductivity was negatively correlated with all seed performance ratings; field emergence ( r = –0.82), plant height ( r = –0.81)”
Claim · model-written summary
Conductivity was negatively correlated with uniformity at r = –0.92.
Not reportedTaxon
Verbatim
e0“At P ≤ 0.01, conductivity was negatively correlated with all seed performance ratings; field emergence ( r = –0.82), plant height ( r = –0.81), uniformity ( r = –0.92)”
Claim · model-written summary
Conductivity was negatively correlated with relative emergence at r = –0.85.
Not reportedTaxon
Verbatim
e0“At P ≤ 0.01, conductivity was negatively correlated with all seed performance ratings; field emergence ( r = –0.82), plant height ( r = –0.81), uniformity ( r = –0.92), and relative emergence ( r = –0.85).”