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SPAD Value Varies With Age and Leaf of Maize Plant and its Relationship With Grain Yield
Bishnu Kandel
Tribhuvan University
Corresponding Author
License:
This work is licensed under a CC BY 4.0 License. Read Full License
View the published version at BMC Research Notes.
Objectives: A field experiment was conducted to evaluate Soil Plant Analysis Development (SPAD) value in different age and leaf of maize hybrid and correlating with grain yield. Ten maize hybrids were replicated thricely under Randomized Complete Block Design (RCBD) during winter of 2018. SPAD value was measured by SPAD 502 Plus meter. At 30 days interval during vegetative stage SPAD measurement were taken from T1 (top most leaf) and T3 (3rd leaf from top leaf) leaves of five randomly selected plants from one plot and they were averaged. For reproductive phase data taken from eo (leaf attached to ear) and e2 (2nd leaf from eo leaf) leaves at 10 days intervals. Same leaves were used for entire data collection.
Results: Significantly different SPAD value was observed for different age and leaves of maize during pre and post anthesis. SPAD value increase with increase in age and decrease at the time of maturity. During vegetative phase T3 leaves has more SPAD value than T1. During reproductive stage eo leaves had more SPAD than e2 leaves, so center leaf of maize contributes more to grain yield. Correlation showed that there is strong positive correlation between different stage of SPAD with grain yield.
Keywords
Corn, Chlorophyll concentration, N concentration, SPAD
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CURRENT STATUS: Published
Version 2
Posted 22 Sep, 2020
Published
On 08 Oct, 2020
No community comments so far
Editorial decision: Accept
On 02 Oct, 2020
Editor assigned
On 18 Sep, 2020
Submission checks complete
On 17 Sep, 2020
Editor invited
On 17 Sep, 2020
No comments provided
Editorial decision: Minor revision
On 14 Sep, 2020
Review #1 received
Received 30 Aug, 2020
Reviewer #1 agreed
On 22 Jun, 2020
Reviewers invited
Invitations sent on 19 Jun, 2020
Editor assigned
On 12 May, 2020
Submission checks complete
On 11 May, 2020
Editor invited
On 11 May, 2020
First submitted
On 06 May, 2020
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
Subject Areas
Agricultural Engineering
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This preprint is under consideration at BMC Research Notes. A preprint is a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Learn more about In Review
Research note
SPAD Value Varies With Age and Leaf of Maize Plant and its Relationship With Grain Yield
Bishnu Kandel
Tribhuvan University
Corresponding Author
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
Peer Review Timeline
CURRENT STATUS: Published
Version 2
Posted 22 Sep, 2020
Published
On 08 Oct, 2020
No community comments so far
Editorial decision: Accept
On 02 Oct, 2020
Editor assigned
On 18 Sep, 2020
Submission checks complete
On 17 Sep, 2020
Editor invited
On 17 Sep, 2020
No comments provided
Editorial decision: Minor revision
On 14 Sep, 2020
Review #1 received
Received 30 Aug, 2020
Reviewer #1 agreed
On 22 Jun, 2020
Reviewers invited
Invitations sent on 19 Jun, 2020
Editor assigned
On 12 May, 2020
Submission checks complete
On 11 May, 2020
Editor invited
On 11 May, 2020
First submitted
On 06 May, 2020
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
Subject Areas
Agricultural Engineering
License:
This work is licensed under a CC BY 4.0 License. Read Full License
View the published version at BMC Research Notes.
Objectives: A field experiment was conducted to evaluate Soil Plant Analysis Development (SPAD) value in different age and leaf of maize hybrid and correlating with grain yield. Ten maize hybrids were replicated thricely under Randomized Complete Block Design (RCBD) during winter of 2018. SPAD value was measured by SPAD 502 Plus meter. At 30 days interval during vegetative stage SPAD measurement were taken from T1 (top most leaf) and T3 (3rd leaf from top leaf) leaves of five randomly selected plants from one plot and they were averaged. For reproductive phase data taken from eo (leaf attached to ear) and e2 (2nd leaf from eo leaf) leaves at 10 days intervals. Same leaves were used for entire data collection.
Results: Significantly different SPAD value was observed for different age and leaves of maize during pre and post anthesis. SPAD value increase with increase in age and decrease at the time of maturity. During vegetative phase T3 leaves has more SPAD value than T1. During reproductive stage eo leaves had more SPAD than e2 leaves, so center leaf of maize contributes more to grain yield. Correlation showed that there is strong positive correlation between different stage of SPAD with grain yield.
Figure 1
Figure 2