Biology of Maize
... Maize or corn (Zea mays) is a plant belonging to the family of grasses (Poaceae). It is cultivated globally being one of the most important cereal crops worldwide. Maize is not only an important food crop for human consumption, but also a basic element of animal feed and raw material for manufacturi ...
... Maize or corn (Zea mays) is a plant belonging to the family of grasses (Poaceae). It is cultivated globally being one of the most important cereal crops worldwide. Maize is not only an important food crop for human consumption, but also a basic element of animal feed and raw material for manufacturi ...
3. maize - dbtbiosafety.nic.in
... level to altitudes higher than 3000 m, and in areas with 250 mm to more than 5000 mm of rainfall per year (Shaw, 1988; Dowswell et. al., 1996) and with a growing cycle ranging from 3 to 13 months (CIMMYT 2000). However the major maize production areas are located in temperate regions of the globe. T ...
... level to altitudes higher than 3000 m, and in areas with 250 mm to more than 5000 mm of rainfall per year (Shaw, 1988; Dowswell et. al., 1996) and with a growing cycle ranging from 3 to 13 months (CIMMYT 2000). However the major maize production areas are located in temperate regions of the globe. T ...
Hypomethylation Promotes Autonomous Endosperm Development
... (Finnegan et al., 1996) with wild-type pollen donors (Adams et al., 2000). We interpreted this result as showing that hypomethylation of the seed parent prevented repression of imprinted genes that would normally be silenced in the maternal genome, so that in the endosperm, maternally transmitted ge ...
... (Finnegan et al., 1996) with wild-type pollen donors (Adams et al., 2000). We interpreted this result as showing that hypomethylation of the seed parent prevented repression of imprinted genes that would normally be silenced in the maternal genome, so that in the endosperm, maternally transmitted ge ...
Update on allergy immunotherapy - Journal of Allergy and Clinical
... anaphylaxis. In addition to reducing symptoms, AIT can change the course of allergic disease and induce allergen-specific immune tolerance. In current clinical practice immunotherapy is delivered either subcutaneously or sublingually; some allergens, such as grass pollen, can be delivered through ei ...
... anaphylaxis. In addition to reducing symptoms, AIT can change the course of allergic disease and induce allergen-specific immune tolerance. In current clinical practice immunotherapy is delivered either subcutaneously or sublingually; some allergens, such as grass pollen, can be delivered through ei ...
PDF-key to all African species
... or dyads (Ameka et al. 2002, 2003). The multiple-access key does not help when only such character-states are observable. This key is also useless as long as the plant has a standard set of characters such as two stamens with common stalk (andropodium), or capsules valves with three ribs, each exten ...
... or dyads (Ameka et al. 2002, 2003). The multiple-access key does not help when only such character-states are observable. This key is also useless as long as the plant has a standard set of characters such as two stamens with common stalk (andropodium), or capsules valves with three ribs, each exten ...
Corn Under Construction
... Maize flowers, however, contain either male or female reproductive parts. ...
... Maize flowers, however, contain either male or female reproductive parts. ...
and BEES
... Soybean flower abscission is very high, as the number of harvested pods are in the range of 10-20% of the number of opened flowers. According to the revised literature, abscising flowers were mostly all fertilized and usually contained proembryos that had undergone two or three cell divisions. In t ...
... Soybean flower abscission is very high, as the number of harvested pods are in the range of 10-20% of the number of opened flowers. According to the revised literature, abscising flowers were mostly all fertilized and usually contained proembryos that had undergone two or three cell divisions. In t ...
Amyloplast-Localized SUBSTANDARD STARCH
... residues and an amino-terminal amyloplast-targeted sequence. SSG4 contains a domain of unknown function490 that is conserved from bacteria to higher plants. Domain of unknown function490-containing proteins with lengths greater than 2,000 amino acid residues are predominant in photosynthetic organis ...
... residues and an amino-terminal amyloplast-targeted sequence. SSG4 contains a domain of unknown function490 that is conserved from bacteria to higher plants. Domain of unknown function490-containing proteins with lengths greater than 2,000 amino acid residues are predominant in photosynthetic organis ...
edulabz - Testlabz.com
... 5. Reproduction by spores is a method of asexual reproduction. 6. A potato tuber is really an underground stem. 7. A whole new plant can grow from the eye of a tuber. 8. Cutting and grafting are natural means for reproduction. 9. Most organisms have the capacity of regeneration in some or the other ...
... 5. Reproduction by spores is a method of asexual reproduction. 6. A potato tuber is really an underground stem. 7. A whole new plant can grow from the eye of a tuber. 8. Cutting and grafting are natural means for reproduction. 9. Most organisms have the capacity of regeneration in some or the other ...
ecological aspects of the cretaceous flowering plant
... Cretaceous (Valanginian-Hauterivian), and the stratigraphic appearance of increasingly complex forms makes it clear that the primary radiation of the group occurred during the late Early Cretaceous. The importance of angiosperms in modern vegetation is thus in striking contrast with the relatively r ...
... Cretaceous (Valanginian-Hauterivian), and the stratigraphic appearance of increasingly complex forms makes it clear that the primary radiation of the group occurred during the late Early Cretaceous. The importance of angiosperms in modern vegetation is thus in striking contrast with the relatively r ...
Plant Physiology
... Plant Physiology Study of function How things work e.g. what controls growth e.g. what controls flowering and fruiting ...
... Plant Physiology Study of function How things work e.g. what controls growth e.g. what controls flowering and fruiting ...
Give 3 advantages of having a wide range of plants
... ANS Have sieve cells with perforated cross walls to transport the food and companion cells, with a nucleus, to keep sieve cells working. ...
... ANS Have sieve cells with perforated cross walls to transport the food and companion cells, with a nucleus, to keep sieve cells working. ...
Consortium for Educational Communication
... growth takes place due to the activity of fascicular cambium, which produces the typical annual rings. 8. Parenchymatous pith is present in the central region of the stem. In some cases mucilage ducts or resin canals are found both in the pith and cortex (Fig.3). Internal structure of Leaf 1. Anatom ...
... growth takes place due to the activity of fascicular cambium, which produces the typical annual rings. 8. Parenchymatous pith is present in the central region of the stem. In some cases mucilage ducts or resin canals are found both in the pith and cortex (Fig.3). Internal structure of Leaf 1. Anatom ...
Molecular and Fossil Evidence on the Origin of Angiosperms
... Prior to the 1960s, the fossil record of the origin and rise of angiosperms was thought to be unusually mysterious, because of both the lack of fossil taxa intermediate between angiosperms and other groups and the character of the earliest angiosperm record in the Barremian, Aptian, and Albian stage ...
... Prior to the 1960s, the fossil record of the origin and rise of angiosperms was thought to be unusually mysterious, because of both the lack of fossil taxa intermediate between angiosperms and other groups and the character of the earliest angiosperm record in the Barremian, Aptian, and Albian stage ...
Molecular and Fossil Evidence on the Origin of Angiosperms
... Prior to the 1960s, the fossil record of the origin and rise of angiosperms was thought to be unusually mysterious, because of both the lack of fossil taxa intermediate between angiosperms and other groups and the character of the earliest angiosperm record in the Barremian, Aptian, and Albian stage ...
... Prior to the 1960s, the fossil record of the origin and rise of angiosperms was thought to be unusually mysterious, because of both the lack of fossil taxa intermediate between angiosperms and other groups and the character of the earliest angiosperm record in the Barremian, Aptian, and Albian stage ...
A review of Brassica species, cross-pollination and implications for
... The Canterbury region of New Zealand produces many seed crops of Brassica, radish and mustard, but in contrast to many overseas production regions there is little production of oilseed Brassica crops. Historically seed production of Brassicas was dominated by the three fodder species B. campestris, ...
... The Canterbury region of New Zealand produces many seed crops of Brassica, radish and mustard, but in contrast to many overseas production regions there is little production of oilseed Brassica crops. Historically seed production of Brassicas was dominated by the three fodder species B. campestris, ...
Early Flowers and Angiosperm Evolution - Assets
... The diversity of angiosperms also includes great variety in physiology and biochemistry. Most angiosperms are autotrophs, but there are also diverse parasites and saprophytes. Some angiosperms supplement their intake of nitrogen through trapping and digesting animals. A much larger number are involv ...
... The diversity of angiosperms also includes great variety in physiology and biochemistry. Most angiosperms are autotrophs, but there are also diverse parasites and saprophytes. Some angiosperms supplement their intake of nitrogen through trapping and digesting animals. A much larger number are involv ...
Sexual Reproduction in Seedless Plants
... You may recall that the seedless vascular plants include the whisk ferns, horsetails, club mosses, and ferns. The seedless vascular plants differ from the nonvascular plants because they have efficient water- and foodconducting systems of vascular tissue. Like the nonvascular plants, the seedless va ...
... You may recall that the seedless vascular plants include the whisk ferns, horsetails, club mosses, and ferns. The seedless vascular plants differ from the nonvascular plants because they have efficient water- and foodconducting systems of vascular tissue. Like the nonvascular plants, the seedless va ...
The correct answer is d
... developing flower would lead to a duplication of carpas and stamens, but would not affect self-incompatibility. 7. Monoecious plants such as corn have either staminate or carpelate flowers. Knowing what you do about the molecular mechanisms of floral development, which of the following might explain ...
... developing flower would lead to a duplication of carpas and stamens, but would not affect self-incompatibility. 7. Monoecious plants such as corn have either staminate or carpelate flowers. Knowing what you do about the molecular mechanisms of floral development, which of the following might explain ...
- ISpatula
... 25) Generally, wind pollination is most likely to be found in seed plants that grow A) close to the ground. B) in dense, single-species stands. C) in relative isolation from other members of the same species. D) along coastlines where prevailing winds blow from the land out to sea. E) in well-draine ...
... 25) Generally, wind pollination is most likely to be found in seed plants that grow A) close to the ground. B) in dense, single-species stands. C) in relative isolation from other members of the same species. D) along coastlines where prevailing winds blow from the land out to sea. E) in well-draine ...
Gibberellin induces diploid pollen formation by
... Corresponding author Danny Geelen: [email protected]. B. L. and N. D. S. conceived and designed the project; B. L. performed the experiment and wrote the draft manuscript; N. D. S provided technical assistance to B. L. and helped with manuscript edition; D. G. supervised the project, contributed ...
... Corresponding author Danny Geelen: [email protected]. B. L. and N. D. S. conceived and designed the project; B. L. performed the experiment and wrote the draft manuscript; N. D. S provided technical assistance to B. L. and helped with manuscript edition; D. G. supervised the project, contributed ...
Cone size is related to branching architecture in conifers
... Pollen cone dry mass was strongly associated with pollen cone volume (Fig. 1) in both OLS (R2 = 0.94; P << 0.01) and PGLS (R2 = 0.91; P << 0.01) regression models. Pollen cone volume was also positively associated with branch diameter (Fig. 2b), regardless of whether OLS or PLGS approaches were used ...
... Pollen cone dry mass was strongly associated with pollen cone volume (Fig. 1) in both OLS (R2 = 0.94; P << 0.01) and PGLS (R2 = 0.91; P << 0.01) regression models. Pollen cone volume was also positively associated with branch diameter (Fig. 2b), regardless of whether OLS or PLGS approaches were used ...
Reverse genetic analysis of the two biotin
... Most critical of these is probably their universal function as the building blocks of the membranes that physically divide all subcellular and cellular compartments (Bloom et al., 1991). These membranes not only serve as barriers, but they also serve as the matrix upon which important metabolic proc ...
... Most critical of these is probably their universal function as the building blocks of the membranes that physically divide all subcellular and cellular compartments (Bloom et al., 1991). These membranes not only serve as barriers, but they also serve as the matrix upon which important metabolic proc ...
topic #11: gymnosperms
... (D) The gametophyte generation is further reduced. As implied above, gymnosperms are heterosporous. In general, the male gametophyte (pollen grain) is transferred to the vicinity of the ovule. There, the male gametophyte absorbs nutrition. The female gametophyte (developing from a megaspore and cont ...
... (D) The gametophyte generation is further reduced. As implied above, gymnosperms are heterosporous. In general, the male gametophyte (pollen grain) is transferred to the vicinity of the ovule. There, the male gametophyte absorbs nutrition. The female gametophyte (developing from a megaspore and cont ...
Pollen
Pollen is a fine to coarse powder containing the microgametophytes of seed plants, which produce the male gametes (sperm cells). Pollen grains have a hard coat made of sporopollenin that protects the gametophytes during the process of their movement from the stamens to the pistil of flowering plants or from the male cone to the female cone of coniferous plants. If pollen lands on a compatible pistil or female cone, it germinates, producing a pollen tube that transfers the sperm to the ovule containing the female gametophyte. Individual pollen grains are small enough to require magnification to see detail. The study of pollen is called palynology and is highly useful in paleoecology, paleontology, archaeology, and forensics.Pollen in plants is used for transferring haploid male genetic material from the anther of a single flower to the stigma of another in cross-pollination. In a case of self-pollination, this process takes place from the anther of a flower to the stigma of the same flower.