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Year 1974 , Volume 6, Issue 2
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abstract of the paper
S.No. |
Title |
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Pages |
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1 |
ALPHA AND BETA
INHERITANCE FOR YIEL AND YIELD COMPONENTS FROM A WHEAT DIALLEL CROSSBARKAT ALI
SOOMRO AND ALI SWARWAR ABRO
ALPHA AND BETA
INHERITANCE FOR YIEL AND YIELD COMPONENTS FROM A WHEAT DIALLEL CROSS ABSTRACT: Associated alpha and beta inheritance was
studied for number of spikelets per spike , 1000 kernel weight and yield per plant in a five- parent F2 diallel cross of common wheat , The results indicated that reciprocal differences for number of spikelets per spike due to beta inheritance largely contributed bu Khush-hal in maternal and Inia in paternal directiojn. 1000 kernel weight exhibited associated alpha inheritance only where Khush-hal was responsible for maternal and Marquis for highest paternal direction. The overall trend of alpha inheritance was in maternal direction. In case of yield per plant , alpha inheritance was absent, and therefore the reciprocal differences were ascribed to associated beta inheritance
for which Inia and Chinook were the highest
| 93-100 |
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2 |
A DIALLEL ANALYSIS
OF YIELD ITS COMPONENTS IN GRAIN SORGHUM, SORGHUM VULGARE PERS. I. MANIFESTATIONS OF HYBRID VIGOUR.MOHAMMAD
SARFARAZ KHAN AND MOHAMMAD ASLAM
A DIALLEL ANALYSIS
OF YIELD ITS COMPONENTS IN GRAIN SORGHUM, SORGHUM VULGARE PERS. I. MANIFESTATIONS OF HYBRID VIGOUR. ABSTRACT: A complete 6 – 6 diallel cross was studied
during 1967 and 1968 to measure heterosis for seven agronomics characters viz. yield number of seats per head , number of heads per plot , plant height, days to 50% bloom and threshing percentage. Heterosis was found to be highly significant for all the seven characters, although the effect for grain yield was highly
pronounced. Heterosis was striking in cases of crosses involving distinctly related parents. The increase in grain production due to heterosis came largely from more number of seeds per head, whereas 1000-seed weight and number of heads per plot showed little effect on yield.
| 101-107 |
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3 |
VARIATION AMONG
FIVE VARIETIES OF CORIANDER , CORIANDRUM SATIVUM L.SHAMA
FUTEHALLY AND AHSAN A. VAHIDY
VARIATION AMONG
FIVE VARIETIES OF CORIANDER , CORIANDRUM SATIVUM L. ABSTRACT: Five locallv available varieties of coriander were
studied with regard to variation in morphological characters and some traits of economic importance. Conspicuous differences were observed in date of maturity, seed size, yield and lipid content if seeds. There was highly significant positive regression of fruit length on floral diameter. The chromosome number was confirmed to be n=11.
| 109-115 |
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4 |
INDUCTION OF
USEFUL MUTATIONS IN BASMATI RICEG. BARI AND
M.A. AWAN
INDUCTION OF
USEFUL MUTATIONS IN BASMATI RICE ABSTRACT: Dry cells of rice variety Basmati-370 were
exposed to 15, 20, 25 and 30 kR of gamma rays, and 1.0, 1.5 and 2.5 kR of fast neutrons. In M1 generation the pollen and spikelet fertility decreased with corresponding increase in radiation exposure. In M2 the frequency of chlorophyll mutations increased as the
radiation dose increased up to 2.0 kR of fast neutrons and 25 kR of gamma rays whereafter
| 117-121 |
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5 |
AN INTERPRETATION
OF THE DISTRIBUTION OF EPILOBIUM HIRSUTUM AND LYTHRUM SALICARIA IN RELATION TO THEIR PHYSIOLOGICAL ECOLOGYS. R. A.
SHAMSI
AN INTERPRETATION
OF THE DISTRIBUTION OF EPILOBIUM HIRSUTUM AND LYTHRUM SALICARIA IN RELATION TO THEIR PHYSIOLOGICAL ECOLOGY ABSTRACT: Result of some experimental investigation of
the comparative biology of Epilobium hirsutum and Lythrum salicaria are decreased in relation to their different matters of ecological and geographical distribution.
| 123-140 |
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6 |
THE EFFECTS SIMAZINE , ATRAZINE AND 2,4-D ON GERMINATION AND EARLY SEEDLING GROWTH OF ORYZA SATIVA L.SYED SHAHID SHAUKAT AND S. L. SONI
THE EFFECTS SIMAZINE , ATRAZINE AND 2,4-D ON GERMINATION AND EARLY SEEDLING GROWTH OF ORYZA SATIVA L. ABSTRACT:
| 141-149 |
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7 |
EFFECT OF
HYDROSTATIC PRESSURE ON THE CELL WALL OF CALLITHAMNION CORYMBOSUM (SMITH) LYNGBMUSTAFA
SHAMEEL
EFFECT OF
HYDROSTATIC PRESSURE ON THE CELL WALL OF CALLITHAMNION CORYMBOSUM (SMITH) LYNGB ABSTRACT: Callithamnion corymbosum exposed to 400 atm
for 5, 10 and 20 hr caused no visible after effect, while subjection to 500 atm resulted in the swelling of longitudinal and transverse walls. The intensity of swelling increased with
the rise of pressure level as well as the duration
of its action. The thickening produced after short exposures gradually disappeared , but a
| 151-156 |
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8 |
BIOLOGICAL
CONTROL OF SCLEROTIUM ORYZAE CATT., THE CAUSE OF STEM TOOR OF RICE
IS POPULATION AND VIABILITY OF SCLEROTIA IN SOILS.M.
HAROON USMANI AND ABDUL GHAFFAR
BIOLOGICAL
CONTROL OF SCLEROTIUM ORYZAE CATT., THE CAUSE OF STEM TOOR OF RICE
IS POPULATION AND VIABILITY OF SCLEROTIA IN SOIL ABSTRACT: A floatation technique was developed for the
recovery and enumeration of sclerotia of Sclerothum oryzae from soil. During a study of the population of sclerotia od S. oryzae in soil
of rice-wheat-rice or rice-fallow-rice rotations a
greater number of sclerotia were observed in soil under wheat as compared to rice or fallow fields . More sclerotia were found on the soil surface with gradual in numbers at 6’’ and
9’’depths. Viability of sclerotia on rice stubbles and in rice fields was much higher than the sclerotia isolated from the soil under wheat crop or fallow field. Decreased viability of sclerotia at greater depths was related to a predominant colonization of sclerotia by bacteria.
| 157-162 |
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9 |
COTTON WEEDS AS
HOSTS OF MYROTHECIUM RORIDUM TODE EX. FR.MUHAMMAD
TANVEER, AHMAD SALEEM AND EHASAN UL HAQ
COTTON WEEDS AS
HOSTS OF MYROTHECIUM RORIDUM TODE EX. FR. ABSTRACT: Myrothecium roridium is a wide spread fungus
causing leaf spot disease of cotton in cotton tracts of Punjab (Tanweer and Saleem, 1974) It has been observed on many cotton varieties including the local ones. The disease first appears as small circular, whitish, grey ringed spots with define margins on the leaves. As the spots grow in size, they coalesce large irregular spots . Concentric rings appear under unfavourable conditions of development and on both sides of the leaf black pinhead sized sporodochia of round to irregular shapes are seen.
| 163- |
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10 |
MYCOFLORA OF
POULTRY FEEDSARSHAD
JAMAL AND ABDUL GHAFFAR
MYCOFLORA OF
POULTRY FEEDS ABSTRACT: The poultry industry has played a significant
role in meeting the demands of meat shortage in the country. There is an average annual consumption of approximately 80,000 bags equivalent to 4,000 metric tons of the poultry feeds sold by atleast 6 manufacturers in Karachi alone. The main constituents of poultry
feeds are grains of wheat rice, millet, maize, rye
and fish meal. There doesn’t appear to be any quality control on Pakistan in manufacture of poultry feeds nor information is available with regards to its deterioration during storage or transit. Micro-organisms are principally responsible for spoilage of foods and feeds (Gray, 1959). A preliminary experiment was therefore carried out to study the population of mycoflora in poultry feeds.
| 165- |
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