Biometric evaluation of morpho-agronomic traits in pepper lines and hybrids

Andrade Júnior, Valter C; Pedrosa, Carlos E; Miranda, Thalita G; Valadares, Nermy R; Pereira, Samuel L; Azevedo, Alcinei M

doi:10.1590/S0102-053620180312

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Research • Hortic. Bras. 36 (3) • Jul-Sep 2018 • https://doi.org/10.1590/S0102-053620180312 copy

Biometric evaluation of morpho-agronomic traits in pepper lines and hybrids

Análise biométrica de caracteres morfoagronômicos em linhagens e híbridos de pimenta

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

In this study, we aimed to evaluate pepper lines and hybrids (Capsicum chinense and C. annuum) in order to obtain information on agronomic performance, heterosis, heterobeltiosis, phenotypic correlations and genetic dissimilarity. We evaluated lines PIM-030, BGH-433, BGH-4285, Numex Sweet, Numex Garnet and simple hybrids Numex Sweet x PIM-030, Numex Garnet x PIM-030 and BGH-4285 x BGH-433. The research was conducted with eight treatments and four replications in a greenhouse, at campus JK of UFVJM. Twenty two agronomic traits were evaluated. The hybrid BGH-4285 x BGH-433 presents higher heterosis and heterobeltiosis for total fruit productivity and productivity of total fruit dry mass, information of great value for future breeding studies. The authors noticed that larger plants tend to be more productive and present higher fruit fresh mass and also fruits with thicker pericarp, as well as larger fruits having longer pedicels with denser seeds, important for production of paprika. Lines BGH-433, BGH-4285 and PIM-030 are the most recommended to be used in breeding programs.

Keywords:
Capsicum spp; breeding; heterosis; canonic variables; Mahalanobis distance

Parameters	PT	MSS	MSP	MFF	EP	NSF	CF	CP	AP	A1B	M100S
Variation coefficients
Residual (%)	25.3	1.6	7.3	36.1	11.5	15.4	11.7	14.6	8.4	11.3	31.2
Genetic (%)	46.3	11.4	11.6	90.7	14.2	58.4	63.2	19.7	19.7	16.7	19.7
Relative	1.8	7.0	1.6	2.5	1.2	3.8	5.4	1.4	2.4	1.5	0.6
Heterosis
A x E	41.0	-1.5	16.4	-60.1	-11.9	5.8	-17.2	-9.1	12.6	13.7	1.7
B x C	385.4	29.5	-1.2	6.9	4.7	35.6	0.5	5.0	18.6	4.2	44.0
A x D	29.6	-7.0	10.4	-47.3	-9.9	12.4	-14.2	-7.6	12.1	9.0	-5.2
Heterobeltiosis
A x E	22.9	-4.3	1.0	-69.9	-16.2	-10.7	-33.7	-10.4	8.6	11.9	-8.8
B x C	373.0	15.0	-5.9	-34.2	-8.9	12.7	-38.2	-0.2	-5.3	-19.3	26.9
A x D	4.1	-10.2	-6.0	-59.4	-20.4	-4.8	-33.0	-11.4	-0.1	2.1	-23.3
Grouping
A - PIM-030	26.1 b	51.1 c	4.1 b	24.7 b	2.0 c	121.8 a	12.1 b	40.2 a	160.8 b	29.6 a	1.0 a
B - BGH-433	9.7 c	48.7 d	5.8 a	1.1 c	1.5 d	25.7 c	1.4 e	27.5 b	219.6 a	33.4 a	0.7 a
C - BGH-4285	9.2 c	37.7 e	6.4 a	4.5 c	2.1 c	17.0 c	6.1 c	24.8 b	131.3 c	18.3 c	0.9 a
D - Numex Sweet	43.0 a	54.9 b	5.8 a	45.7 a	2.6 a	84.6 b	21.6 a	43.9 a	125.7 c	25.9 b	1.6 a
E - Numex Garnet	35.1 a	54.2 b	5.6 a	48.5 a	2.2 b	83.9 b	20.1 a	41.4 a	149.4 b	30.6 a	1.3 a
A x E	43.1 a	51.8 c	5.6 a	14.6 b	1.9 c	108.8 a	13.3 b	37.1 a	174.6 b	34.3 a	1.2 a
B x C	46.0 a	55.9 a	6.0 a	3.0 c	1.9 c	29.0 c	3.8 d	27.5 b	208.0 a	27.0 b	1.2 a
D x A	44.7 a	49.3 d	5.5 a	18.5 b	2.1 c	116.0 a	14.5 b	38.9 a	160.6 b	30.3 a	1.3 a

Variables	MSP	MFF	EP	NSF	CF	CP	AP	A1B	M100S	PT
MSS	-0.30^ns	0.47^ns	0.21^ns	0.39^ns	0.41^ns	0.56^ns	0.26^ns	0.56^ns	0.56^ns	0.75^*
MSP		-0.30^ns	0.01^ns	-0.73^*	-0.26^ns	-0.56^ns	0.01^ns	-0.43^ns	-0.01^ns	-0.1^ns
MFF			0.80^**	0.55^ns	0.94^**	0.88^**	-0.63^*	0.08^ns	0.77^**	0.4^ns
EP				0.33^ns	0.83^**	0.65^*	-0.85^**	-0.42^ns	0.87^**	0.42^ns
NSF					0.70^*	0.86^**	-0.32^ns	0.48^ns	0.49^ns	0.54^ns
CF						0.92^**	-0.71^*	0.1^ns	0.85^**	0.54^ns
CP							-0.5^ns	0.36^ns	0.75^*	0.57^ns
AP								0.55^ns	-0.57^ns	-0.07^ns
A1B									-0.06^ns	0.29^ns
M100S										0.79^ns

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[TFN1] Averages followed by same letter in the column did not differ significantly from each other, Scott-Knott, p<0.05. PT= total productivity of fruits; MSS= seed dry mass; MSP= pulp dry mass; MFF= fruit fresh mass; EP= pericarp thickness; NSF= number of seeds per fruit; CF= fruit length; CP= pedicel length; AP= plant height; A1B= height of the 1st bifurcation; M100S= mass of 100 seeds.