Combining Ability Studies in Rice (Oryza sativa L.) Under Salinized Soil
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Mahmood, Tariq; Shabbir, Ghulam; Sarfraz, Maliha; Sadiq, Muhammad Attique; Bhatti, Muhammad Khalid; Mehdi, S. M.; Jamil, Muhammad; Hassan, Ghulam

doi:10.3923/ajps.2002.88.90

Cited by 8 publications

(2 citation statements)

References 5 publications

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“…Menurut Pandini et al (2002), suatu karakter yang memiliki nilai daya gabung umum yang nyata mengindikasikan aksi gen aditif dan memungkinkan diperoleh kemajuan genetik yang besar dalam seleksi intra populasi. Mahmood et al (2002) menyatakan bahwa tetua yang memiliki daya gabung tinggi dapat digunakan sebagai donor untuk karakter yang dipelajari.…”

Section: Daya Gabung Umum (Gca)unclassified

PENDUGAAN PARAMETER GENETIK PADA PERSILANGAN DIALEL BEBERAPA TETUA CABAI (Capsicum annuum L.)

Dalimunthe¹

2015

Informatika Pertanian

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High genetic diversity in chili is the basis for a chili breeding program. One of the methods to increase diversity is through crossing. There are several crossing designs in order to produce new varieties, such as diallel crossing. Diallel analysis is a method for studying the inheritance of characteristics from various crossings. The aim of this research was to estimate the genetic parameters, the general combining ability (GCA) and specific combining ability (SCA) of six inbred lines of chili. The research was conducted in November 2008-May 2009 at the Experimental Farm Leuwikopo IPB. Genetic materials used were six inbred lines of chili (IPB C2, IPB C9, IPB C10, IPB C14, IPB C15 and IPB C20) and the F1s of the combination of six inbred lines. The experimental design was Randomized Complete Block Design with a single factor, namely genotype. The number of genotypes were 36 with three replications, so there were 108 units of experiment. The crossing design used was diallel crossing design. The results showed that there were no interaction between genes on the dichotomous height and fruit weight, significant additive effects, the control genes spread unevenly, and relatively high heritability values. Genotype which carried recessive genes the most was IPB C14 and genotype which carried the most dominant genes was IPB C10. IPB C10 showed the highest GCA for dichotomous height and IPB C2 showed the highest GCA on fruit weight. The crossing between IPB C2 x IPB C10 showed the highest SCA for dichotomous height. For fruit weight, crossing of IPB C2x IPB C14 had the highest SCA. Crossing combination of IPB C2 x IPB C14 was the best hybrid.

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Section: Daya Gabung Umum (Gca)unclassified

PENDUGAAN PARAMETER GENETIK PADA PERSILANGAN DIALEL BEBERAPA TETUA CABAI (Capsicum annuum L.)

Dalimunthe¹

2015

Informatika Pertanian

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“…Whereas for 1000-grain weight the non-additive gene effects was more. MAHMOOD et al (2002) recorded high additive effects for plant height, panicle length and nonadditive effects for panicle fertility, shoot dry weight and paddy yield. ALAM et al (2004) reported the significant positive heterosis for plant height, days to maturity, number of fertile spikelets/panicle, number of effective tillers/hill, 1000-grain weight and grain yield/10 hills on three levels of heterosis.…”

Section: Introductionmentioning

confidence: 99%

Combining ability and heritability of selected rice varieties for grain yield, its components and grain quality characters

Allahgholipour¹,

Farshdfar

Rabiei

2015

Genetika

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This study was conducted to determine the combining ability and heritability of rice grain yield, its components and some grain quality traits such as amylose content (AC), gelatinization temperature (GT), gel consistency (GC) and head rice recovery (HRR). The study was commenced by crossing the selected rice varieties based on a full diallel mating design. The F1 was harvested at the end of the season. In the following season, the crossed, reciprocal and parental lines were planted in randomly complete block design with three replications. Analysis of variance indicated that genotypes were significantly different for all traits. The diallel analysis by Griffing`s method showed highly significant differences for GCA for number of panicles per plant (PN), amylose content, gelatinization temperature and head rice recovery. Highly significant differences were also observed for both SCA and REC for all evaluated characters. The results showed that the grain yield (GY), number of filled grains (FGN), 100-grain weight (HGW) and GC were controlled by non-additive gene action, while the inheritance of PN, AC, GT and HRR were largely controlled by additive gene effects, although non- additive genetic components and reciprocal effect were also involved, which suggest that a selection process could be done in the early generations. The two improved lines (RI18442-1 and RI18430-46) were found to be good general combiners for GY and FGN, while the best combiners for PN was Tarom Mohali and IR50 and for HGW was RI18430-46. The best combinations for GY were RI18430-46 ? IR50, Tarom Mohali ? RI18447-2 and Daylamani ? RI18430-46. The good hybrids were Tarom Mohali ? IR50, Line23 ? RI18447-2 and Line23 ? Backcross line for AC. Narrow sense heritability showed that the GY and GC had the lowest values while the other traits had either moderate or high heritability, which indicates selection in the early generations could be done to fix the favorable genes. In present study, narrow sense heritability was high for AC and moderate for GT, PN and HRR.

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Indica rice varietal development in Pakistan: an overview

Bashir

Khan²,

Rasheed

et al. 2007

Paddy Water Environ

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Pakistan is well known for its basmati rice with long grain and aroma, as well as for non-basmati indica varieties; however average yield is lower as compared with other countries. Besides, cultural practices, the main reason for low productivity in Pakistan is that, local varieties are susceptible to different biotic and abiotic factors like insect pests, diseases, drought, and salinity. Different approaches have been undertaken in Pakistan to tackle these problems through traditional breeding of selection and crossing, mutation breeding, somaclonal variation as well as plant transformation studies in recent past. For variety development, the most successful examples arose from traditional breeding that produced famous basmati varieties like Basmati 370, Basmati 385 and Super basmati, and nonbasmati varieties such as IRRI-6, DR-82, DR-83, DR-92, Swat-I and Swat-II, which earn a significant share of foreign exchange every year. Six varieties have also been developed through mutation breeding, and one through exploitation of somaclonal variation but their contribution to the national economy is not significant. On the other hand, no variety has been registered as commercial by plant transformation groups. This review discusses the problems and prospects of rice breeding with special emphasis on basmati rice in Pakistan particularly in Pakistani Punjab (a major producing area), as well as focuses on future research programs.

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Combining Ability Studies in Rice (Oryza sativa L.) Under Salinized Soil Conditions

Cited by 8 publications

References 5 publications

PENDUGAAN PARAMETER GENETIK PADA PERSILANGAN DIALEL BEBERAPA TETUA CABAI (Capsicum annuum L.)

PENDUGAAN PARAMETER GENETIK PADA PERSILANGAN DIALEL BEBERAPA TETUA CABAI (Capsicum annuum L.)

Combining ability and heritability of selected rice varieties for grain yield, its components and grain quality characters

Indica rice varietal development in Pakistan: an overview

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