Biological and physiological effects of pyriproxyfen insecticide and amino acid glycine on silkworm, Bombyx mori L

Bulletin of the National Research Centre

Table 2 Effect of pyriproxyfen and glycine on technological parameters (cocoon indexes and filament characters)

Treatment	conc^a	Cocoon characters			Silk filament characters
Treatment	conc^a	Cocoon weight (g)	Cocoon shell weight (g)	Cocoon silk ratio (%)	Silk filament length (m)	Silk filament weight (g)	Silk filament size (dn)
Pyriproxyfen at 2^nd day	1	1.192	0.372	25.732	1091.75	0.292	2.99
	10	1.192	0.291	24.381	1294.08	0.331	2.92
	100	1.222	0.285	23.305	1220.75	0.300	2.79
Mean		1.0202	0.316	24.473	1202.19	0.308	2.91
Pyriproxyfen + Glycine 1% at 5^th day	1	1.674	0.46	27.473	1523.889	0.33	2.50
	10	1.720	0.497	28.897	1403.889	0.497	3.28
	100	1.469	0.388	26.393	1700.111	0.377	2.52
Mean		1.621	0.448	27.588	1542.62	0.382	2.77
Pyriproxyfen at 8^nd day	1	1.443	0.291	24.381	1291.83	0.304	2.64
	10	1.409	0.291	24.381	1421.33	0.315	2.53
	100	1.441	0.405	28.048	1478.44	0.358	2.54
Mean		1.431	0.329	25.603	1397.20	0.325	2.58
Glycine 1%	1	1.640	0.460	28.057	1466.44	0.391	2.76
Control		0.956	0.245	22.639	1226.25	0.316	2.710
L.S.D 0.05 Conc.		0.164	0.068	2.244	270.286	NS	NS
P ≥ 0.05		0.0000***	0.0000***	0.0000***	0.0079**	0.4086	0.6888
L.S.D 0.05 treatment		0.091	0.041	1.183	135.21	Ns	NS
P ≥ 0.05		0.0000***	0.0000***	0.0000***	0.0000***	0.1197	0.7307

NS, *, **, *** denote not significant and significant differences at 0.05, 0.01, and 0.001levels of probability, respectively
^aThe tested concentrations of pyriproxyfen (μg/larva) and the glycine concentration tested is 1%