Record Details

Source and sink traits and their relationship under deficit soil moisture stress conditions in an indeterminate crop: sesame (Sesamum indicum L.)

KRISHI: Publication and Data Inventory Repository

View Archive Info
 
 
Field Value
 
Title Source and sink traits and their relationship under deficit soil moisture stress conditions in an indeterminate crop: sesame (Sesamum indicum L.)
Not Available
 
Creator Gopika K+,
Ratnakumar P+*,
Pandey BB,
Manikanta ChLN,
Ramya KT,
Rathnakumar AL,
Guhey A
 
Subject Sesame ,
abiotic stress
 
Description Not Available
Sesame is an indeterminate oilseed crop where yield is determined by source and its capacity
for synthesis and mobilization of photosynthates. Knowledge of the existing relation between
source and sink and its validation under deficit soil moisture conditions is limited in sesame.
Therefore, experiments were conducted using 25 sesame genotypes with differing plant
architecture in terms of branching pattern (mono to multiple) and leaf area (minimum to
maximum) under both irrigated (IR) and deficit soil moisture stress (DS) conditions for two
consecutive years 2021 and 2022. The variations existing among the source and sink traits
were measured, and the ANOVA of the measured traits revealed a significant differences
among the genotypes for source traits, viz. leaf area, stem and leaf dry weight, net photosynthesis,
total dry matter and their relationship with sink, i.e. seed yield under IR and DS
conditions, and it was further confirmed using regression analysis. The results showed, certain
source traits viz., stem dry weight and total dry matter at seed filling stage were positively
associated with seed yield at both IR and DS conditions. Additionally, cluster analysis showed
that the genotypes IC 54039-B-1 and SI 1802 had a proportional leaf area with good seed
yield and displayed a better source and sink relationship, highlighting the fact that photosynthates
were efficiently translocated to the sink. The genotypes IC 54039-B-1 and SI 1802
outperformed IR under DS with minimal yield differences and optimal leaf weight, total dry
matter, and plant stem weight. These genotypes with better source and sink relationships can
be used in sesame crop improvement programmes.
Not Available
 
Date 2024-01-10T17:30:32Z
2024-01-10T17:30:32Z
1001-01-01
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/81235
 
Language English
 
Relation Not Available;
 
Publisher Not Available