Tauseef Taj Kiani1*, Mozammil Hussain1 and Hidayat ur Rahman2
... lines and estimation of heterosis and inbreeding depression are prerequisites to start hybrid development program. In this context, we explored heterosis and inbreeding depression in indigenous maize germplasm comprising inbred lines NCMLQ1, NCMLQ2, NCMLD1, NCMLD2, NCMLD3, and NCMLD4. ese genotypes were crossed to get ten F1 hybrid combinations, w...
Qaizar Ahmed1, Fida Mohammad2, Hidayat-ur-Rahman2, Sheraz Ahmed2* and Fakharuddin2
...s conducted to determine heterosis for various agronomic and biochemical traits in Flue Cured Virginia tobacco. Seven tobacco varieties/lines, ‘NC606’, ‘K399’, ‘Spt G 126’, ‘Spt G 28’, ‘KHG21’, ‘KHG22’ and ‘KHG24’ with contrasting traits were crossed in all possible combinations to generate 7 x 7 diallel crosses. In 2008 and 2009, all F1 hybrids along with their pare...
Oguz Bilgin, Kayihan Z. Korkut, Alpay Balkan, and Ismet Baser*
... degree and direction of heterosis varied for different characters and for different hybrids. The highest heterosis over mid and better parents (120.14-109.93%) was recorded in hybrid of Kyzyltan91xIDSN209 for grain weight/spike. Maximum limits of heterosis over mid and better parent for spike length, spikelets/spike, grains/spike, spike density, grains/spikelets and spike harvest index we...
Gulzar S. Sanghera and Wassem Hussain*
HETEROSIS IN RELATION TO COMBINING ABILITY PER SE PERFORMANCE IN TEMPERATE RICE (ORYZA SATIVA L.)
...nd Jhelum) assessment of heterosis for effective restored cross combinations showed a significant heterosis for all the traits except number of filled grains per panicle. The results revealed that the degree of heterosis varied from trait to trait. All combinations that showed superiority over standard checks for grain yield per plant also showed significant hetero...
Syeda Nasreen*, Mehwish Ishaque**, Muhammad Ayub Khan*, Saleem-ud-din* and Syeda Musarrat Gilani*
COMBINING ABILITY ANALYSIS FOR SEED PROTEINS, OIL CONTENT AND FATTY ACIDS COMPOSITION IN SUNFLOWER (HELIANTHUS ANNUUS L.)
...etal improvement through heterosis breeding. The lines x testers were the major contributors in inheritance of all characters studied....
Said Salman*, Shah Jehan Khan* and Javed Khan**
HETEROSIS AND HETROBELTIOSIS PERFORMANCE OF MORPHOLOGICAL TRAITS IN BREAD WHEAT CROSSES UNDER DROUGHT STRESS CONDITIONS
...00-grain weight. Maximum heterosis and heterobeltiosis interactions were noted in Pari-73 x Hashim-08 for 1000-grain weight (29% and 22%), grains per spike (19% and 11%) and spike length (33% and 22%). Promising results were obtained with respect to shorter plant height, maximum spike -1 length, more spikelets and grains spike and achieved all results important for drought resistant cultivars....
Ehtisham Shakeel Khokhar*1, Amir Shakeel1, Muhammad Amir Maqbool1, Muhammad Khubaib Abuzar2, Sumaira Zareen2, Syeda Sana Aamir4 and Muhammad Asadullah4
...iv>Combining ability and heterosis analysis was done to identify the potential parents and best performing hybrids for seed cotton yield, yield contributing traits and fiber quality parameters. Six lines, viz., VH-259, IUB-222, CRS-456, AA-703, KZ-191, PB-39 and four testers PB-39, CIM-608, BH-163 and PB-900 were crossed in line × tester crossing fashion to develop 20 F1 hybrids. Analysis of variance displayed significant differences among par...
Muhammad Ismaeel1,2*, Syed Mehar Ali Shah1, Aziz Ur Rahman1 and Mian Ahmad Raza1
... assess heritability and heterosis among 30 rice genotypes for yield and related parameters at The University of Agriculture Peshawar-Pakistan, during 2011. Thirty rice genotypes including 14 parents and 16 F1 hybrids were replicated twice in a randomized complete block design (RCBD). Rice genotypes reflected significant differences (P≤0.01) for all the traits. Among the rice parents, Bas-6129 and Bas-370 showed the highest values for grains panicle-1 (214....
Muhammad Ilyas*, Sardar Ali Khan, Shahid Iqbal Awan and Shafiq-Ur-Rehman
...ght be better suited for heterosis breeding under drought prone semi-arid areas. ...
Juan Augusto Hernández-Rivera1, Jaime Molina-Ochoa2,*, Luis Jorge García-Márquez1, Omar Francisco Prado-Rebolledo1, Rafael Julio Macedo-Barragán1, Arturo César García-Casillas1 and Muhammad Irfan Ullah3
...ion; the benefits of the heterosis in crossbreeding cattle by hybridization; the body condition score in crossbred dairy cattle; the yields in crossbreds; here is also discussed that even when there have been many crossbreeding in dairy cattle, but when the producer choose a system crossbreeding in dairy cows always mostly contemplate only body weight, body condition score, dry matter intake, and feed efficiency. Is suggested to contemplate other traits like g...
Ihsan Ullah Khan*, Muhammad Arshad, Muhammad Ayub Khan, Muhammad Ashraf, Ashiq Saleem, Sundas Awan, Samra Azam and Shamim Ul Sibtain Shah
... to assess the impact of heterosis on different Agro-morphological traits in sunflower hybrids. Randomized Complete Block Design (RCBD) was used with three replications. The experimental material consisted of nine hybrids, six inbred lines and a commercial check (Hysun-33). The recorded data on days to flowering initiation (DFI), days to flowering completion (DFC), days to maturity (DM), plant height (PHT, cm), stem thickness (ST, mm), head diameter (HD, cm), ...
Wajid Khan* and Raziuddin
... genetic variability and heterosis in eight rapeseed genotypes for maturity, morphological and yield traits. The eight parental genotypes i.e., AUP-01, AUP-05, AUP-07, AUP-08, AUP-10, AUP-13, AUP-18 and AUP-21 were crossed in full diallel fashion to generate 56 F1 crosses. These parental genotypes and their F1 hybrids were evaluated during 2015/16 in the field at the University of Agriculture, Peshawar, Pakistan. Mean squares revealed significant genetic varia...
Muhammad Ilyas1*, Sardar Ali Khan1, Shahid Iqbal Awan1, Shafiq-ur-Rehman1, Muhammad Riaz Khan2 and Sumaira Hafeez1
...the crosses to calculate heterosis and inbreeding depression for Randomized Complete Block Design under split plot arrangement. Highly significant inbreeding depression was recorded for all traits indicating a dominant type of gene action. Heterosis was high for both crosses along with high inbreeding depression. All these results exhibit that the hybrid breeding is the best option for inbreds to exploit their potential.&nbs...
Saba Aleem1*, Mehvish Tahir2, Iram Sharif3, Muqadas Aleem4, Muhammad Najeebullah2, Ali Nawaz1, Amina Batool1, Muhammad Imran Khan1 and Waheed Arshad1
Principal Component and Cluster Analyses as Tools in the Assessment of Genetic Diversity for Late Season Cauliflower Genotypes
... generations, exploiting heterosis, and broaden the genetic base of the cauliflower germplasm....
Hafiz Basheer Ahmad1*, Sajida Habib2, Waqas Shafqat Chattha3, Rizwana Qamar2, Shazia Saeed2, Abdul Khaliq1 and Salsabeel Rauf2
...e crossed to get maximum heterosis during hybrid development program....
Ghulam Ali Bajwa1*, Zahid Rızwan2 and Muhammad Atıf Majeed1
...hybrids were screened by heterosis using 11 biological and silk yielding quantitative traits. Heterosis was measured using multiple evaluation index (MEI), mid-parent heterosis (MPH) and better-parent heterosis (BPH), and hybrids were ranked using MEI and cumulative sub-ordinate function (CSF). The hybrids produced MEI >50 with the highest in PO206&ti...
Syed Majid Rasheed1*, Tauseef Ali1, Saad Jan1, Faiz ur Rehman2, Muhammad Ali Shah3, Zahid Hussain1 and Abdul Waheed4
...henotypic performance. A heterosis study revealed that most of the crosses outperform the checks, and hence could be used in future okra breeding programs. The estimated inbreeding depression revealed that the majority of the traits showed negative inbreeding depression due to selfing, thus least affected by selfing. Thus from our study G8, G14 and G23 could be identified as the best-performing crosses for yield-associated traits. Hence should be involved in a...
Heni Indrijani*, Asep Anang, Muhammad Farhan Fadilah, Nena Hilmia, Maya Fitriani
...the growth curve and the heterosis effect of egg weight, Day Old Chicken weight, fertility, and hatchability from crossbreeding of Sentul Debu and Sentul Kulawu in Poultry Breeding Jatiwangi. The layer period was examined using a sample of 319 chickens selected from two different groups. The first group consisted of 13 males and 147 females Sentul Debu chicken aged 11 months, while the second group consisted of 13 males and 146 females Sentul Kulawu chicken ag...
Ali Hassan1, Javaria Ashraf1*, Salman Wahid1, Kamran Alyas1, Samaria Nisar1, Sadia Kanwal2, Nadia Hussain Ahmad2, Amna Bibi2 and Rameen Nawaz3
...he combining ability and heterosis analysis are the important biological phenomenon that has been used to select the top performing parents and hybrids in different crop plants. In cotton, heterosis of morphological and yield related traits using line × tester design is very important to identify best performing parents in future cotton breeding program. Therefore, in this study five lines (MNH-1020, MNH-1035, FH-152, ...
Shishir Sharma1*, Suk Bahadur Gurung2, Ritesh Kumar Yadav1, Bibek Phulara1 and Laxmi Prasad Joshi1
...te similar. By utilizing heterosis in segregating, choosing parents from clusters II and III would be successful in the hybridization program to develop improved NLB-resistant hybrids....
Muhammad Ayyub, Mitha Khan*, Syed Abdul Malik, Sakhawat Ali, Syed Shamsullah, Mujeeb ur Rehman, Ikhlaq Ahmed, Ameer Uddin, Habibullah Kakar, Mohammad Zahid, Khalil Ahmed, Mana Khan, Mukhtiar Ahmed, Muhammad Rafiq Khetran, Zia ul Haq and Muhammad Azam
...hly positive significant heterosis. Similarly, parents and their crosses were significant for all the 14 parameters studied. It is concluded from this study, among parental lines Raskoo and TD-1 are good general combiner for the traits plant height, No. of tillers plant-1, Harvest index, Spike density, spikelets spike-1, Grains spike -1, Fresh weight, Dry weight, Flag leaf area, thousand grain weight, Grain yield plant-1 and Tones per hectare as showed highly ...
Syed Said Badshah Bukhari, Ghulam Ali Bajwa and Miskeen Ali
...quantitative traits. The heterosis was estimated using multiple evaluation indices (EI), mid parent heterosis (MPH), better parent heterosis (BPH), and sub-ordinate function indices (SF). The results showed highly significant (p<0.01) difference in rearing performance of inbred and hybrid breeds. Hybrid JL04xCL04 showed superior performance in the fecundity (596.50±4.03 eggs per femal...
R. Javed1,2, T. Usman1, S. Niaz2, N. Ali2,3, H. Baneh4, K. Ullah5, I. Khattak1, M. Kamal1,2,
S. Bahadar6, N.U. Khan1, S. Khan1,7, Y. Wang3*, Y. Yu3* and Mostafa K. Nassar8
...lity, repeatability, and heterosis), and environmental factors. The present study was designed to evaluate the effect of udder health, genetic factors and environmental factors on milk performance traits in cattle breeds. The study was conducted on four dairy farms in Khyber Pakhtunkhwa, Pakistan. A total of 291 milk samples and 547 records were collected from lactating cattle ranging between parities one to six. For milk performance traits and udder health, e...
