Genetic effects conferring heat tolerance in upland cotton (Gossypium hirsutum L.)

Table 2 Generation means for boll weight, gin turn out, fibre length, fibre strength, fibre fineness and relative cell injury in two crosses VH-282 × FH-142 (1) and DNH-40 × VH-259 (2) under normal (N) and heat stress (H) conditions

Traits	Stress Levels	Generation Means						Pop Effect
Traits	Stress Levels	P₁	P₂	F₁	BC₁	BC₂	F₂	Pop Effect
BW	N1	3.50	3.46	3.63	3.56	3.61	3.59	*
	H1	3.43	3.38	4.00	2.08	2.57	3.33	*
	N2	3.14	3.13	3.62	3.12	3.30	3.45	*
	H2	3.40	3.12	3.53	3.32	3.17	3.22	*
GOT	N1	39.63	39.78	39.44	38.27	38.23	39.19	**
	H1	38.25	38.28	38.39	38.31	38.33	38.28	**
	N2	39.55	38.89	39.11	37.11	38.41	37.98	**
	H2	38.60	37.33	39.46	37.94	38.35	37.69	**
FL	N1	24.98	24.74	24.71	24.31	25.25	23.31	**
	H1	26.97	27.51	28.05	26.94	27.30	26.91	**
	N2	26.91	27.53	27.93	27.10	27.21	26.97	**
	H2	26.88	26.75	27.77	27.10	27.00	27.18	**
FS	N1	25.06	24.63	24.92	24.61	24.90	23.19	**
	H1	25.17	24.55	24.75	23.52	24.22	23.95	**
	N2	24.70	24.65	24.55	24.54	24.52	24.53	**
	H2	24.91	24.33	24.67	24.66	24.64	24.56	**
FF	N1	4.30	4.26	4.32	4.33	4.37	4.28	*
	H1	4.24	4.29	4.20	4.68	4.47	4.47	*
	N2	4.30	4.21	4.25	4.40	4.26	4.46	*
	H2	4.27	4.28	4.29	4.49	4.44	4.47	*
RCI	N1	28.30	28.45	21.86	26.66	26.57	26.97	**
	H1	24.27	37.17	25.67	35.23	36.73	32.48	**
	N2	25.36	25.32	21.47	31.27	29.94	28.34	**
	H2	24.78	35.02	25.72	33.79	33.93	32.01	**

ISSN: 2523-3254