This investigation was set out to study the genetic control in early generations of key traits for production of early maturing, high quality and high yielding Brassica juncea L. genotypes in Pakistan. Eight genotypes of B. juncea were chosen for one or more of several interesting taits for genetic improvement of B. juncea in Pakistan – early maturity, yellow seed colour, large seed size, high seed quality (low erucic acid in oil and glucosinolate in meal), high seed yield and oil and protein content. All the eight selected genotypes were crossed in a complete diallel design and genetic analysis was conducted on subsequent early generations in field experiments. The genetic analysis for each trait included Hayman analysis of diallel F1 progeny for additive and dominant effects, combining ability analysis and generation mean analysis. Based on the outcome of these genetic analyses, suitable breeding methodology will be recommended for further breeding of B. juncea in Pakistan. The parental material was obtained from National Agricultural Research Centre (NARC), Islamabad, Barani Agricultural Research Institute (BARI), Chakwal and Nuclear Institute for Food and Agriculture (NIFA), Peshawar. Two early maturing genotypes included in the parental material were selected after evaluating twenty genotypes in winter 2005-06. F1 generation was obtained from the complete diallel in winter season 2006-07 at BARI, Chakwal. The 56 F1 hybrids along with their parents were sown in Randomized Complete Block Design with three replications during next crop season 2007-08. Data were recorded for days to first flowering and physiological maturity, plant height, primary branches per plant, siliquae per plant, siliqua length, seeds per siliqua,1000-seed weight, seed yield per plot, oil and protein contents, erucic acid and glucosinolate contents. Analysis of variance showed significant differences for all the traits and therefore, data were further analyzed using Hayman’s approach which showed existance of both additive and dominance gene effects governing all the traits. However, estimates for genetic components of variation revealed that additive effects were more important for days to first flowering, days to physiological maturity, seeds per siliqua, 1000-seed weight, erucic acid and glucosinolate contents while, dominance effects were more prominent for plant height, number of primary branches per plant, number of siliquae per plant, siliqua length, seed yield per plot, oil and protein contents. Asymmetrical distribution of dominant genes among the parents was identified for all the characters except days to first flowering in which both parents had nearly equal number of dominant genes. Some of the traits like siliqua length, oil and protein contents and glucosinolate contents showed presence of directional dominance. For plant height, number of primary branches, siliquae per plant, siliqua length, seed yield per plot, oil and protein contents, over dominance was observed. The results for combining ability analysis indicated significant general combining ability for most of the traits except for plant height, siliqua length, oil and protein contents indicating that selection would not bring about significant improvement in these traits due to absence of significant variations. Combining ability analysis showed that UCD-8/4, KJ-119 and BRS-2 were good general combiners for maturity and yield related traits. NIFA RAYA x UCD-8/4, CANOLA RAYA x UCD-6/23, KJ-119 x UCD-6/23, CANOLA RAYA x UCD-8/4, KJ-119 x UCD-8/4, CANOLA RAYA x UCD-8/4, KJ-119 x BRS-2 and KJ-119 x CANOLA RAYA involved at least one of the good general combiner parents and showed high desired specific combining ability for many traits. Heterosis estimates indicated that significant negative and positive values were shown by many crosses for all the traits except for protein content, for which only one cross showed positive significant heterosis. Many of the crosses with significant positive heterosis for oil content involved yellow-seeded parents while seven of the crosses showed significant positive heterosis simultaneously for both erucic acid and glucosinolate contents. High broad sense heritability was observed for all the traits except for days to first flowering and days to physiological maturity. The estimates for genetic advance were moderate to high for all the traits. High values for heterosis, heritability and genetic advance for various traits indicated good genetic potential for selection. During the same crop season, five of the F1 crosses were selected on the basis of their performance regarding different yield related traits. To generate F2 generation, five F1 plants from each cross were selfed. Back cross generations i.e, BC1 and BC2, were also developed by crossing two F1 hybrids with both of the parents for all the five crosses. The seeds of eight parents, F1, F2, BC1 and BC2 were sown during crop season 2008-09. Data were collected for maturity and yield attributes and subjected to analysis of variance and generation mean analysis to derive information on the relative importance of additive effects, dominance deviations and epistasis with the help of six parameter model presented by Hayman. Significance of scaling tests indicated presence of epistasis. Results for generation mean analysis showed that additive gene effects were effective in most of the crosses for many traits however some crosses showed presence of dominance effects for days to physiological maturity, plant height, number of primary branches, 1000-seed weight and seed yield. Dominance x dominance interaction was prominent for all the traits while for siliqua length and seed yield, additive x dominance interaction was also important. Additive x additive component was also detected in few crosses for various traits. Duplicate epistasis was detected for 1000-seed weight and seed yield while complementary epistasis was observed for days to physiological maturity, plant height and number of primary branches. Presence of dominance effects along with duplicate epistasis for 1000-seed weight and seed yield indicated that selection might be better carried out in late segregating generations. From the information regarding genetic control of all these traits it is suggested that for the traits showing prominent role of non-additive effects and presence of over-dominance, selection can be delayed up to late segregating generations while for the traits observing more effective role of additive effects, selection can be carried out in early segregating generations. Some combinations have been identified which will be useful to develop and release early maturing, good quality and high yielding varieties of B. juncea in Pakistan.
The Immensely Merciful to all, The Infinitely Compassionate to everyone.
30:01 a. Alif. Lam. Mim.
30:02 a. The Byzantines have been defeated,
30:03 a. in the nearby land, b. yet after their defeat, they will be victorious once again over their Persian enemy…..
30:04 a. within a few years - b. for their affair belongs to Allah - The One and Only God - from beginning to end, c. and at that time of victory, the believers will celebrate -
30:05 a. It all happens with Allah’s help. b. HE Helps whoever HE Wills to victory, c. for HE is The Almighty, The Ever-Compassionate.
30:06 a. This is the firm Promise of Allah, b. and Allah never breaks HIS Promise, c. even though most people do not understand it.
30:07 a. They only understand what is apparent in this worldly life, b. but they are oblivious of the realm of the Hereafter.
30:08 a. Would they never contemplate within themselves so as to emerge from their oblivion? b. Allah did not create the celestial realm and the terrestrial world, and whatever is between and beyond them, except in truth, and for a specified term. c. Even so, many people are disbelievers in the Meeting with their Rabb - The Lord.
30:09 a. Have they never traveled around the world and visited the archaeological sites and seen the fate of those civilizations who were before them? b. In fact, they were even more powerful than them - such as ‘Ad, Thamud, and Tubba’, and
Tujuan penelitian ini untuk mendeskripsikan peningkatan hasil belajar mahasiswa melalui penerapan model pembelajaran kooperatif Word Square. Populasi dalam penelitian ini adalah 36 mahasiswa jurusan Pendidikan Ekonomi IKIP Gunungsitoli semester II. Penelitian ini merupakan Penelitian Tindakan Kelas dengan prosedur penelitian: persiapan, tindakan, observasi, dan refleksi. Berdasarkan hasil penelitian ditemukan bahwa penerapan model pembelajaran kooperatif work square dalam proses belajar mengajar mata kuliah Dasar- Dasar Akuntansi I dapat meningkatkan hasil belajar mahasiswa Pendidikan Ekonomi semester II IKIP Gunungsitoli. Hal ini terlihat pada hasil belajar siswa pada siklus I sebesar 58, 30% dalam kategori sedang, meningkat pada siklus II mencapai 83, 30% dalam kategori sangat baik. Sehingga disimpulkan bahwa model kooperatif Word Square berpengaruh positif terhadap hasil belajar yaitu peningkatan hasil belajar mahasiswa pada mata kuliah Dasar-Dasar Akuntansi I.
The Relationship Between Corporate Governance and Firm Value: Role of Discretionary Earnings Management Corporate governance practices help in enhancing firm value by effectively monitoring the managerial decisions as well as reducing the level of information asymmetry and agency problem between empowered managers and dispersed minority shareholders. The present study investigates the relationship between corporate governance and firm value for the developing economy of Pakistan. The study has also taken into consideration the moderating role of discretionary earnings management in corporate governance-firm value relationship, which is considered to be a relatively ignored research issue in corporate finance literature. In addition to focusing on individual mechanisms of corporate governance (i.e. audit, board, compensation, ownership), the present study has also constructed a composite corporate governance index to investigate the role of effective corporate governance in mitigating earnings management and enhancing firm value. The data of 208 firms listed at Karachi Stock Exchange for a time period of 2004- 2011 has been used for analysis and accounting, market and economic measures of performance have been used as firm value. The study finds that corporate governance plays a vital role in enhancing firm value in long as well as short run. Constitution of internal audit committees as an effective internal audit system is essential for the enriched progress of a firm. The monetary incentives and compensation paid to the top executives motivates them to work in the best interests of the company which increases not only short term accounting value of firm but also long term market and economic value. The findings reveal that discretionary earnings management practices by corporate managers damage the firm value in long term and it could be mitigated by effective corporate governance mechanisms. Moreover, this value damaging role of discretionary earnings management negatively moderates between effective corporate governance and firm value. Firms with earnings manipulation weakens the impact of effectiveness of governance system and leads to lower firm value. Finally, the study suggests some practical implications based upon the findings for investors, policy makers and manager.