Legume Genomics and Genetics 2015, Vol.6, No.4, 1-7
5
+
Positive significant effect
-
Negative significant effect
Non-significant effect
Traits
Meha/ DMS 03-17-2
Meha/ DMS 01-34-2
[d] [h] [i] [j] [l] [d] [h] [i] [j] [l]
DFFO
+
-
+
+ +
-
-
+
DM
-
-
-
+ -
-
-
+
PH
-
+
+
+ -
+
+
NPBP
+
+ +
+
+
-
NSBP
-
+ -
NMS
+
+
AIL
-
-
+ -
+
NPP
+
+
+
-
-
PL
-
+ -
+
-
NSP
-
+
+
-
SI
-
-
+
+
+
+
+
BYP
+
+
+
+
-
HI
-
+
+
-
+
+
-
SYP
-
+
+ -
+
+
-
Figure 1: Shaded matrix for direction of generation
components involved in inheritance of fourteen
agro-morphological traits
(except HI & SYP in Meha/ DMS 01-34-2). For cross
I; the traits
viz.,
DFFO, NPBP & NPP exhibited
positive and significant additive [d] effect, whereas
DM, PH, AIL, NSP, SI, HI & SYP showed significant
[d] effect but in negative direction. Similarly, NMS &
HI showed positive and significant dominance [h]
effect, whereas DFFO, DM, NSBP, AIL, PL & SI
showed negative and significant [h] effect. Rest
traits
viz.,
PH, NPBP, NPP, NSP, BYP and SYP
showed non-significant [h] effect. Additive x additive
[i] interaction was found positive and significant for
PH, BYP, HI & SYP, whereas negative significant for
DM. Additive x dominance [j] gene effect was found
negative only for PH, whereas DFFO, NPBP & NSP
exhibited positive and significant [j] gene effect.
Dominance x dominance [l] was found positive and
significant for all the twelve agro-morphological traits
under study except NSBP, NSP & HI. Likewise in
cross II, The traits
viz.,
DFFO & NPBP exhibited
positive and significant [d] gene effect, whereas DM,
PH, NSBP, AIL, PL, HI & SYP showed negative and
significant [d] gene effect. Similarly, DFFO & DM
showed negative and significant [h] effect, whereas
NPBP, NMS, NPP, PL, NSP, SI, BYP, HI & SYP
showed positive and significant [h] effect. Additive
x additive [i] interaction was found positive and
significant for PH, NPBP, NSP, SI, BYP, HI & SYP,
whereas negative and significant for DFFO & DM.
Additive x dominance [j] gene effect was found
positive and significant for PH, AIL & SI, whereas
negative and significant for NPP. Dominance x
dominance [l] was found positive and significant for
DFFO & DM, whereas negative significant for NPBP,
NPP, PL, NSP, BYP, HI & SYP.
Barring some exceptions, [h] effects were greater than
the [d] effects for almost all agro-morphological traits
in both crosses, indicated the importance of dominance
gene effects for yield and its related agro-morphological
traits. The negative and positive sign of [i] gene effect
showed dispersion and association of alleles in parents,
respectively. Therefore, allele association exhibited by
both crosses
viz.,
cross I (PH, BYP, HI & SYP) and
cross II (PH, AIL, SI) for respective traits, whereas
none of the cross showed allele dispersion. The
negative significant sign of [d] gene effect was
recorded for DM, PH, AIL, HI & SYP in both crosses;
NSP & SI in cross I and NSBP & PL in cross II,
indicating the involvement of reductive alleles in
expression of dominant phenotype. In cross I almost all
the traits showed unidirectional dominant, whereas in
cross II mostly traits showed ambidirectional dominant,
indicating the involvement of both reductive and
increasing alleles depending on genetic background of
parents. The contribution of dominance gene effects
varied with to cross and traits. Similar result was also
observed earlier by Gawande et al., (2005) and Azizi et
al.,
(2006). The findings also revealed that one and/ or
more type of epistatic interaction involved in
inheritance of all the traits under study indicating their
complex nature. The similar results were also obtained
by Khattak et al., (2004a) for PH; Khattak et al.,
(2004b) for NCP, TW & NSP; Patil and Kajjidoni
(2005) for DFF, PL & HI; Singh et al., (2007) for DFF,
DM, PH, NPBP, NSBP, NPP & SYP; Patel et al., (2012)
for DFF, PH & SYP. The [h] and [l] sign was found
opposite for DFFO, DM, NPP and PL in both crosses
indicating the duplicate type of digenic interaction.
Likewise, similar type of digenic interaction was also
observed for NSBP, AIL, and SI in cross Meha/ DMS
03-17-2 and for NPBP, NSP, BYP HI and SYP in cross
