INFLORESCENCE
AND SILIQUA DEVELOPMENT OF MUSTARD VAIRETIES AS INFLUENCED BY DIFFERENT SOWING
TIME AND INFLORESCENCE-TOP CUTTING
M.
Yeasmin*, M.J.Ullah, J. Rahman, K. Fatima and M. J. Azad
*Corresponding author, E-mail: marjana_yeasmin@yahoo.com
Abstract
An
experiment was conducted to evaluate the effect of inflorescence-top cuttings
on the seed yield and yield attributes of mustard varieties under varying
sowing times during November, 2011 to February, 2012. Three mustard varieties
(V1=Tori-7, V2=BARI Sarisha-9 and V3=BARI
Sarisha-15); three sowing times (S1=01 November, S2=15
November and S3=30 November); and three inflorescence-top cutting
times (C0=control, C1=early and C2=late, 80%
maximum siliqua have set, maximum siliqua have set ) were used as treatments.
Result revealed that both the number of primary and secondary brances of
inflorescence decreased due the delayed sowing. Significantly the highest
number of primary inflorescence was found in S1 (6.32 plant-1.
Variety showed significant effect on secondary inflorescences the maximum of
which was obtained from V1 (4.63) followed by V2 (3.8).
Both primary and secondary inflorescence-branches were affected with the
interactions of sowing time, variety and cutting time. Number of filled and
sterile siliqua plant-1 were significantly influenced by sowing time
and top cuttings which increased with
the inflorescence-top cutting showing significantly the highest filled siliqua
in C2, S2V2,
S1V1 and S2V2; S1C1
and S1C0; V2C2 and V2C0;
S2V1C1, S1V1C0
and S3V1C2 and S1V1C1.
Siliqua length increased with delayed sowing time of varieties showing
significantly the longest siliqua with S3 in V1. The
early cutting (C1) showed the longest siliqua length (4.76 cm). S1
and S2 with V1 and V2 had significantly higher
siliqua length (4.64-5.17 cm) and S2 and S3 with all the
varieties at all the cutting times had significantly higher siliqua length
(4.48-4.88 cm).
Key words: Mustard, rape, inflorescence cutting, sowing time and variety
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