Stability Analysis of a High Fibre Yield and Low Lignin Content “Thick Stem” Mutant in Tossa Jute (Corchorus olitorius L.)

Table 1

Morphometric traits and meiosis in control and in mutants.

Attributes	Plant types
	Control				“Thick stem”
	2010	2011	2012	Pooled	M 5	M 6	M 7	Pooled
Morphometric
Plant height (cm)	262.25±7.8	263.40±7.0	264.00±3.5	263.22±6.10	315.50±1.00	317.25±1.00	316.40±0.50	316.38±0.83
Number of primary branches/plant	2.42±0.4	2.40±0.5	2.40±0.4	2.41±0.43	2.40±0.40	2.00±0.20	2.50±0.20	2.27±0.27
Total branches/plant	4.00±0.5	4.10±0.6	4.00±0.5	4.03±0.05	6.00±0.30	5.50±0.45	5.60±0.40	5.70±0.38
Number of capsule/plant	18.40±0.3	18.48±0.5	19.00±0.1	18.63±0.30	25.00±0.80	22.67±0.90	23.10±1.00	23.59±0.9
Capsule length (cm)	8.20±1.2	8.20±1.2	8.10±0.6	8.17±1.00	7.90±1.10	7.82±0.28	8.00±0.50	7.91±0.93
Seeds/capsule	180.00±3.8	182.12±2.6	185.00±2.0	182.37±2.80	210±3.54	204±3.80	207±1.90	207±3.08
Seed yield/plant (g)	6.80±0.8	6.90±0.4	7.18±0.1	6.96±0.43	7.98±0.62	7.78±0.40	7.85±0.38	7.87±0.47
Fiber yield/plant (g)	24.28±1.1	25.00±0.5	24.84±1.0	24.71±0.87	78.33±1.67	80.00±1.20	80.12±1.78	79.48±1.55
Meiosis
Frequency/cell at diplotene
I	0.12	0.48	0.39	0.33	0.71	0.76	0.57	0.68
II	6.94	6.75	6.80	6.86	6.64	6.62	6.72	6.66
Bivalent configurations
Ring/cell	0.48±0.12	0.33±0.10	0.46±0.12	0.43±0.11	0.33±0.11	0.38±0.12	0.45±0.10	0.39±0.11
Rod/cell	6.46±0.08	6.43±0.06	6.34±0.06	6.41±0.07	6.31±0.06	6.24±0.05	6.27±0.10	6.12±0.06
Chiasma/cell	7.42±0.09	7.09±0.12	7.26±0.10	7.27±0.10	6.97±0.12	6.97±0.13	7.17±0.08	7.05±0.07
Number of cells scored at diplotene	104	79	102	285	42	63	60	165
Mean association/cell at MI
I	0.42	0.36	0.31	0.37	0.00	0.00	0.00	0.00
II	6.97	6.82	6.85	6.82	7.00	7.00	7.00	7.00
Predominant association (7II) at MI (%)	86.05	80.77	88.46	85.45	100.00	100.00	100.00	100.00
Cells scored at MI	86	78	104	268	34	58	62	154
Equal (7/7) separation of chromosomes at AI (%)	100.00	100.00	100.00	100.00	100.00	100.00	100.00	100.00
Number of AI cells scored	33	17	22	72	11	17	13	41
Pollen fertility (%)	84.65	78.15	81.18	80.92	64.79	68.98	68.00	67.15
Number of pollen grains scored	482	737	919	2138	497	432	450	1379