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Analysing the SPAD dynamics of water-stressed vs. well-watered sesame (Sesamum indicum L.) accessions and establishing their relationship with seed yield.

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Title Analysing the SPAD dynamics of water-stressed vs. well-watered sesame (Sesamum indicum L.) accessions and establishing their relationship with seed yield.
Not Available
 
Creator Anusha PL*,
Ratnakumar P*.,
Ramesh K.,
Pandey BB.,
Umamahesh V.,
Sandhya Rani P.
 
Subject Sesame, SPAD chlorophyll readings, Seed yield, Deficit moisture stress, Correlation and regression
 
Description Not Available
Background. The chlorophyll content is susceptible to deficit moisture stress and may
affect the plant yield. Leaf chlorophyll content is directly related to tolerance and higher
productivity under deficit moisture stress (WS). The SPAD meter is an excellent tool
for rapid analysis of crop chlorophyll content. Therefore, establishing a relationship
between leaf chlorophyll content and seed yield is crucial in sesame, particularly under
deficit moisture stress.
Methods. Seeds of 37 sesame genotypes with checks were used in this study. These
genotypes were mostly landraces, adapted to different agro-ecological zones in India.
The selected genotypes were evaluated under well water (WW) and deficit moisture
stress (WS) conditions. The SPAD readings were recorded ten (10) times each at every
seven days intervals from the juvenile/first bud (30 35 days after sowing) to ripening/
physiological maturity (95 100 days after sowing) stage. This study aimed to identify
the association between leaf SPAD readings (recorded at 7-days interval) and seed yield
of sesame genotypes.
Results. The analysis of variance revealed the presence of significant variation in SPAD
readings due to treatment (WW and WS), genotypes, and their interaction effects.
The SPAD readings at all stages were positively correlated with seed yield in both WW
and WS. High values of correlation coefficients were observed at 52 (r: 0.672) and 59
(r: 0.655) DAS under WS; whereas at 59 (r: 0.960), 66 (r: 0.972) and 73 (r: 0.974)
DAS under WW at one percent significance level (p
Not Available
 
Date 2024-01-10T17:30:12Z
2024-01-10T17:30:12Z
1001-01-01
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/81234
 
Language English
 
Relation Not Available;
 
Publisher Not Available